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Compositae

(Family)

Overview

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The largest family of flowering plants, the Compositae (Asteraceae), comprising about 1,100 genera and more than 20,000 species and characterized by many sm all flowers arranged in a head looking like a single flower and subtended by an involucre of bracts. A head may consist of both ray flowers and disk flowers, as in the sunflower, of disk flowers only, as in the burdock, or of ray flowers only, as in the dandelion.

Taxonomy

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The Family Compositae is further organized into finer groupings including:

Genera

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Aaronsohnia

Aaronsohnia is a genus in the family Asteraceae, native to mainly non-salty steppes and deserts in North Africa and Middle East. It was named in 1927 after the agronomist Aaron Aaronsohn by the botanists Otto Warburg (1859?1938) and Alexander Eig (1894?1938) [more]

Abrotanella

Abrotanella is a genus in the family Asteraceae, of about 20 species, native to New Guinea, Australia, New Zealand and temperate South America. [more]

Acamptopappus

Acamptopappus is a genus of flowering plants in the family Asteraceae. There are two species, both native to the deserts in southwestern North America. The name is derived from a- (not), campto- (bent), and pappus (down). They are also commonly known as goldenheads. [more]

Acantholepis

Acantholepis is a genus of flowering plants in the daisy family. [more]

Acanthospermum

Acanthospermum is a genus of plants in the family Asteraceae, also known as Starburrs or Starburs. [more]

Achillea

Achillea () is a genus of about 85 flowering plants, in the family Asteraceae, commonly referred to as yarrow. They occur in Europe and temperate areas of Asia. A few grow in North America. These plants typically have frilly, hairy, aromatic leaves. [more]

Achyrachaena

The annual herb Achyrachaena mollis bears the common name blow-wives, which is both singular and plural. It is the only species in the monotypic genus Achyrachaena. It is a flower which grows to approximately one foot in height on a strong, straight stem. Atop the stem is a large, rounded bud which opens into a spherical cluster of flowers. The actual flowers are small and yellow and nearly invisible behind the showy fruits, which extend shiny bright white scales which look like long rectangular flower petals. These silky white scales catch the wind, which allows the single-seeded fruits to be dispersed. [more]

Achyrocline

Achyrocline is a genus of flowering plant in the Asteraceae family. It contains the following species: [more]

Achyrothalamus

Achyrothalamus is a genus of flowering plants in the daisy family. [more]

Acmella

A genus in the Kingdom Animalia. [more]

Acourtia

Acourtia is a genus of flowering plants in the daisy family, Asteraceae. Plants in this genus are known generally as desertpeonies and are native to North and Central America. These flowers usually have only disc florets in their flower heads, but some of the disc florets are long and look like ray florets. They are diverse in appearance. The flowers are usually white, pink, or purple. [more]

Acroptilon

Russian Knapweed (Acroptilon repens) is a bushy rhizomatous perennial, up to 8 dm tall. Stems and leaves are finely arachnoid-tomentose becoming glabrous and green with age. The rosette leaves are oblanceolate, pinnately lobed to entire, 2?3 cm wide by 3?8 cm long. The lower cauline leaves are smaller, pinnately lobed; the upper leaves become much reduced, sessile, serrate to entire. The heads are numerous terminating the branches. Flowers are pink to purplish, the marginal ones not enlarged. The outer and middle involucral bracts are broad, striate, smooth with broadly rounded tips; the inner bracts are narrower with hairy tips. Pappus present with bristles 6?11 mm long. Fruit is a whitish, slightly ridged achene. [more]

Adelostigma

Adelostigma is a genus of flowering plants in the daisy family. [more]

Adenocaulon

Adenocaulon is a small genus of flowering plants in the daisy family known generally as trailplants. There are about six species which can be found in the Americas and eastern Asia. [more]

Adenophyllum

Adenophyllum is a small genus of plants in the sunflower family. It contains ten species known generally as dogweeds. These are gangly, daisylike or thistlelike plants with yellow or reddish flowers. They are native to the southwestern United States and northern Mexico, where they are most common in desert regions. Some species are considered synonyms under genus Dyssodia and may have dyssodia as their common names. [more]

Adenostemma

Adenostemma is a genus of flowering plant in the Asteraceae family. It contains the following species: [more]

Adenostyles

Adenostyles, is a large genus of to a flowering plants in the sunflower family Asteraceae, and of the constantly changing tribe Senecioneae. Adenostyles occur in the temperate climates of the northern hemisphere, mainly in Europe and Asia minor. [more]

Aedesia

Aedesia (Greek Greek: ) was a female philosopher of the Neoplatonic school who lived in Alexandria in the fifth century. She was a relation of Syrianus and the wife of Hermias, and was equally celebrated for her beauty and her virtues. After the death of her husband, she devoted herself to relieving the wants of the distressed and the education of her children, Ammonius and Heliodorus. She accompanied the latter to Athens, where they went to study philosophy, and was received with great distinction by all the philosophers there, and especially by Proclus, to whom she had been betrothed by Syrianus, when she was quite young. She lived to a considerable age, and her funeral oration was pronounced by Damascius, who was then a young man, in hexameter verses. [more]

Aequatorium

Aequatorium is a genus of flowering plant in the Asteraceae family and members of the tribe Senecioneae which are native to South America. [more]

Aetheolaena

Aetheolaena is a genus of flowering plant in the Asteraceae family. It contains the following species: [more]

Agathea

[more]

Ageratina

Perennials, subshrubs, or shrubs [trees], mostly 20-220 cm. Stems usually erect, rarely scandent, sparsely to densely branched. Leaves cauline; mostly opposite (distal sometimes alternate) ; petiolate; blades 3(-5) -nerved from bases, usually deltate, lanceolate, ovate, rhombic, or triangular, sometimes orbiculate, margins entire, crenate, dentate, or serrate, faces glabrous or hispidulous, pilose, or puberulent, sometimes gland-dotted (A. occidentalis, A. adenophora). Heads discoid, usually in compact, (terminal and axillary) corymbiform arrays, sometimes borne singly. Involucres campanulate, 3-6 mm diam. Phyllaries persistent, 8-30 in 2(-3) series, 0- or 2-nerved, lanceolate to linear, ± equal (herbaceous). Florets 10-60; corollas white or lavender, throats obconic to campanulate (lengths 1.5-2 times diams.) ; styles: bases sometimes enlarged, glabrous, branches linear, seldom distally dilated. Receptacles convex (glabrous or hairy), epaleate. Cypselae prismatic or ± fusiform, usually 5-ribbed, scabrellous and/or gland-dotted; pappi usually persistent, sometimes fragile, rarely falling, of 5-40, barbellulate bristles in 1 series. x = 17.[1] [more]

Ageratum

Annuals and perennials, mostly 20-120 cm. Stems often decumbent (rooting at proximal nodes), sparsely to densely branched. Leaves cauline; all or mostly opposite; petiolate; blades mostly 1-nerved, deltate to ovate, or elliptic to lanceolate, margins entire or toothed, faces glabrous or ± pilose, puberulent, or strigoso-hispid, sometimes gland-dotted. Heads discoid, in dense to open, cymiform to corymbiform arrays. Involucres campanulate, 3-6 mm. Phyllaries persistent, 30-40 in 2-3 series, usually 2-nerved, lanceolate, ± equal (often indurate, margins scarious). Receptacles conic, epaleate [paleate]. Florets 20-125; corollas white or bluish to lavender, throats ± campanulate (lengths 2 times diams.) ; styles: bases not enlarged, glabrous, branches ± linear to clavate (usually papillose and dilated distally). Cypselae prismatic, 4-5-ribbed, glabrous or sparsely strigoso-hispidulous; pappi persistent, of 5-6 aristate scales, or coroniform, or 0. x = 10.[2] [more]

Agoseris

Agoseris is a small genus of liguliferous herbs in the Asteraceae or sunflower family. In general appearance they are reminiscent of dandelions and are sometimes called mountain dandelion or false dandelion. Like dandelions the plants are (mostly) stemless, the leaves being all basal and forming a rosette, contain milky sap, produce several unbranched, stem-like flower stalks (peduncles), each flower stalk bearing a single, erect flower head that contains several yellow florets, the flower head maturing into a ball-like seed head of beaked achenes, each achene with a pappus of numerous, white bristles. [more]

Ainsliaea

Ainsliaea is a genus of flowering plants in the daisy family. [more]

Ajania

Ajania is a genus of flowering plants in the daisy family. The genus is named after the russian port city Ayan on the coast of the sea of okhotsk. [more]

Alfredia

Alfredia is a genus of flowering plants in the daisy family. [more]

Allopterigeron

[more]

Almutaster

Almutaster is a monotypic genus of asters containing the single species Almutaster pauciflorus (formerly Aster pauciflorus), which is known by the common name alkali marsh aster. It is native to western North America from northern Canada to Mexico, where it grows in wet alkaline and saline soils such as inland salt marshes and salt flats. This is a perennial herb growing a reddish-green glandular stem to heights from 30 to 120 centimeters. The narrow leaves are linear in shape and up to 10 centimeters long. The inflorescence is an open array of flower heads containing white to pale purple ray florets and a center of yellow disc florets. The head is lined with phyllaries covered in tiny white resin glands. The fruit is a hairy achene. [more]

Amberboa

Amberboa is a genus of flowering plants in the daisy family. [more]

Amblyocarpum

[more]

Amblyolepis

Amblyolepis is a genus of flowering plants in the daisy family. [more]

Amblyopappus

Amblyopappus is a monotypic genus in the daisy family which contains the single plant species Amblyopappus pusillus, known by the common name dwarf coastweed. This plant is native to Baja California in Mexico and the coast of southern California in the United States. It can also be found on the west coast of South America. This is an aromatic annual herb with an erect stem up to 40 centimeters in height. The stem turns dark red with age. It is covered in narrow fleshy leaves and each small branch of the stem is topped with an inflorescence of one to several rounded budlike yellow flowers. The bracts are green, often with reddish edges. [more]

Ambrosia

In ancient Greek mythology, ambrosia (Greek: ) is sometimes the food or drink of the Greek gods (or demigods), often depicted as conferring ageless immortality upon whomever consumes it. It was brought to the gods in Olympus by doves, so it may have been thought of in the Homeric tradition as a kind of divine exhalation of the Earth. [more]

Ammobium

Ammobium alatum (Winged Everlasting) is a perennial Asteraceae native to Eastern Australia. [more]

Ampelaster

Ampelaster is a genus of flowering plants in the daisy family, Asteraceae. [more]

Amphiachyris

Amphiachyris is a genus of flowering plants in the daisy family, Asteraceae. [more]

Amphipappus

Amphipappus is a monotypic genus in the daisy family which contains the single species Amphipappus fremontii. It takes its scientific epithet, fremontii from John C. Fr?mont, and is known commonly by the names chaffbush or eytelia (in honor of artist Carl Eytel). It is a branching shrub which grows up to about half a meter in height and is native to the southwestern United States, where its rounded clumps are scattered about dry, rocky areas. [more]

Amphoricarpos

[more]

Anacyclus

Anacyclus is a genus of plants in the Asteraceae family. [more]

Anaphalis

Anaphalis (A-n?-pha-lis) is a genus within the composite family whose members are commonly known by the name Pearly everlasting. There are around 110 species within the genus with the vast majority being native to central and southern Asia. There is one species native to North America that is fairly well known and popular in cultivation, namely the Western Pearly Everlasting (Anaphalis margaritacea). [more]

Ancistrocarphus

Ancistrocarphus is a genus of flowering plants in the aster family. It contains two species native to western North America. These plants are often treated as members of genus Stylocline, but they are not as closely related to Stylocline species as they are to plants of other genera, especially Hesperevax. [more]

Andryala

Andryala is a genus of flowering plants in the daisy family. [more]

Angianthus

Angianthus is a genus of flowering plants in the daisy family. [more]

Anisocoma

Anisocoma acaulis (scale bud) is a wildflower found in the Mojave, Colorado Deserts, and California's Owens Valley above 2,000 feet (610 m). It is the sole member of monotypic genus Anisocoma. The plant grows a flat mat of jagged lobed leaves that lie on the ground. It sends up stalks up to 20 centimeters tall topped with flowers which bloom from April to June. The flowers may be yellow or white with yellow centers. The frilly ray florets are rectangular with flat or slightly toothed tips. This flower is found growing in colonies in sandy places and washes, and bleeds milky sap if cut. The common name "scale bud" is a reference to the scaly appearance of the closed flower bud. [more]

Anisopappus

Anisopappus is a genus of about 30 species of flowering plants in the Asteraceae family. It contains the following species: [more]

Antennaria

Antennaria is a genus of about 45 species of herbaceous perennial plants in the family Asteraceae, native to temperate regions of the Northern Hemisphere, with one species (A. chilensis) in temperate southern South America; the highest species diversity is in North America. Common names include catsfoot or cat's-foot, pussytoes and everlasting. [more]

Anthemis

Anthemis (?n-the-mis) is a genus of about 100 species of aromatic herbs in the Asteraceae, closely related to Chamaemelum, and like that genus, known by the common name chamomile; some species are also called dog-fennel or mayweed. However, Mayweed is improperly used for this genus since Mayweed refers to the Matricaria genus. Anthemis are native to the Mediterranean region and southwest Asia east to Iran. A number of species have also become naturalized in England/United Kingdom and in other parts of the world. [more]

Antheropeas

Antheropeas is a genus of flowering plants in the daisy family. [more]

Aphanactis

Aphanactis is a genus of flowering plant in the Asteraceae family. It contains the following species: [more]

Aphanostephus

Aphanostephus is a genus of flowering plants in the daisy family, Asteraceae. [more]

Archibaccharis

Archibaccharis is a genus of flowering plants in the daisy family. [more]

Arctium

Burdock is any of a group of biennial thistles in the genus Arctium, family Asteraceae. Native to the Old World, several species have been widely introduced worldwide. [more]

Arctotis

Arctotis is a genus of about 40-50 species of flowering plants in the family Asteraceae, native to southern Africa, from South Africa north to Angola. Some of the plants are alternatively placed in the genus Venidium. Many are called by the common name "African daisy", or "Gousblom" in Afrikaans. Some species have been developed as popular horticultural items because of their attractive yellow, orange, red, or white flowers. Gardeners cultivate some species as half-hardy annuals. [more]

Argyranthemum

Argyranthemum (the dill daisies) is a genus of flowering plants belonging to the family Asteraceae. Members of this genus are sometimes also placed in the genus Chrysanthemum. [more]

Argyroxiphium

Argyroxiphium is a small genus of five species in the sunflower family, Asteraceae. Its members are known by the common name of silversword or greensword due to their long, narrow leaves and the silvery hairs on some species. It belongs to a larger radiation of over 50 species, including the physically different genera Dubautia and Wilkesia. This grouping is often referred to as the silversword alliance. [more]

Aristeguietia

Aristeguietia is a genus of about 21 species of flowering plant in the tribe Eupatorieae of the Asteraceae family. It is found from Colombia to southern Peru, with one species in Chile. [more]

Arnica

Arnica (English pronunciation: ) is a genus with about 30 perennial, herbaceous species, belonging to the sunflower family (Asteraceae). The genus name Arnica may be derived from the Greek arna, "lamb", in reference to the soft, hairy leaves. [more]

Arnoglossum

Arnoglossum or by its common name Indian plantain is a genus of the family Asteraceae and the tribe Senecioneae whose genera have been misapplied and renamed. In the case of Arnoglossum, the genus name Cacalia has been misapplied. The name Arnoglossum is from the Greek word "arnos" meaning lamb, and "glossum" meaning tongue and is the ancient name for some species of Plantago. [more]

Arnoseris

Arnoseris is a genus of flowering plants in the daisy family. [more]

Artemisia

Artemisia can mean: [more]

Artotheca

[more]

Askellia

[more]

Aspilia

Aspilia is a genus of flowering plants in the daisy family. Historically, Aspilia africana has been used in Mbaise and most Igbo speaking parts of Nigeria to prevent conception suggesting potential contraceptive and anti-fertility properties. Leaf extract and fractions of A. africana effectively arrested bleeding from fresh wounds, inhibited microbial growth of known wound contaminants and accelerated wound healing process. Aspilia is thought to be used as herbal medicine by some chimpanzees. [more]

Aster

Aster can refer to one of the following: [more]

Asterothamnus

[more]

Astranthium

Astranthium is a genus of flowering plants in the daisy family, Asteraceae. [more]

Athanasia

Athanasia is a genus of flowering plants in the daisy family. [more]

Athrixia

Athrixia is a genus of flowering plants in the daisy family, Asteraceae. [more]

Atractylis

The Distaff thistle is a plant of the genus Atractylis in the daisy family (Asteraceae). [more]

Atractylodes

Atractylodes is a genus in the plant family Asteraceae. [more]

Atrichoseris

Atrichoseris is a monotypic genus containing the single species Atrichoseris platyphylla, which is known by the common names tobacco weed, parachute plant, and gravel ghost. This plant, a member of the daisy family, is native to the desert southwest of the United States. It produces a low basal rosette of rounded leaves patterned with gray-green and purple patches at ground level. It sends up a weedy-looking thin branching stem topped with a number of attractive, fragrant white or pink-tinged flowers, the layered ray florets rectangular and toothed. [more]

Ayapana

Ayapana is a genus of 14 species of tropical American perennial herbs, which have at times been classified in the genus Eupatorium. The leaves, at least of Ayapana triplinervis, are commonly used medicinally. [more]

Ayapanopsis

Ayapanopsis is a genus of about 14 to 15 species of flowering plants in the Asteraceae family. They are found in the Andes, from southern Colombia to Argentina. [more]

Baccharis

Baccharis () is a genus of perennials and shrubs in the aster family (Asteraceae). They are commonly known as baccharises but sometimes referred to as "brooms", because many members have small thin leaves resembling the true brooms. They are not at all related to these however, but belong to an entirely different lineage of eudicots. B. halimifolia is commonly known as "groundsel bush", and in fact Baccharis is in the same family as the true groundsels, Senecio. [more]

Baccharoides

[more]

Badilloa

Badilloa is a genus of 10 species of shrubs and small trees in the Asteraceae family. They are native to the Andes, from Venezuela to Peru. [more]

Baeria

Lasthenia, commonly known as goldfields, is a genus of the botanical family Asteraceae. The genus is named after Lasthenia, a cross-dressing female pupil of the ancient Greek philosopher Plato. [more]

Baeriopsis

[more]

Bafutia

Bafutia tenuicaulis is a species of flowering plant in the Asteraceae family, and the only species in the genus Bafutia. It is found in Cameroon and Nigeria, where it lives in rocky areas. [more]

Bahia

Bahia (Portuguese pronunciation: ) is one of the 26 states of Brazil, and is located in the northeastern part of the country on the Atlantic coast. It is the fourth most populous Brazilian state after S?o Paulo, Minas Gerais and Rio de Janeiro, and the fifth-largest in size. Bahia's capital is the city of Salvador, or more properly, S?o Salvador da Bahia de Todos os Santos, and is located at the junction of the Atlantic Ocean and the Bay of All Saints, first seen by European sailors in 1501. The name "bahia" is an archaic spelling of the Portuguese word ba?a, meaning "bay". [more]

Balduina

Balduina, population 42,000, is an urban area that belongs to the Municipio XIX of the commune of Rome, and to the fourteenth borough of the city, (Q.XIV, called ). Situated at 139 metres above sea level on the southern side of Monte Mario, Balduina is the highest part of Rome. [more]

Balsamorhiza

Balsamorhiza is a genus of plants in the sunflower family known commonly as balsamroots. These are perennials with fleshy taproots and caudices bearing erect stems and large, basal leaves. Atop the tall stems are showy yellow sunflower-like blooms. Balsamroots are native to western North America. There are about twelve species plus many common hybrids. [more]

Baltimora

Baltimora were an Italian New Wave dance outfit active in the mid to late 1980s. The group comprised Jimmy McShane (frontman/vocals), Maurizio Bassi (keyboards, vocals), Giorgio Cocilovo (lead guitar), Claudio Bazzari (rhythm guitar), Pier Michelatti (bass guitar) and Gabriele Melotti (drums). They are best known for their 1985 hit single "Tarzan Boy". [more]

Barkleyanthus

Shrubs, 100-200[-400+] cm (usually glabrous, sometimes sparsely arachnose or glabrate). Stems usually 1, erect to lax. Leaves cauline; alternate (clustered distally) ; weakly petiolate; blades weakly 3-nerved, lance-elliptic or lanceolate to lance-linear, margins obscurely dentate to subentire or entire, faces usually glabrous. Heads radiate, in cymiform or paniculiform arrays (crowded in terminal and axillary clusters). Calyculi 0 or of 1-2+ bractlets. Involucres hemispheric or campanulate to weakly turbinate, 5-8 mm diam. Phyllaries persistent, 5-8+ in (1-) 2 series, erect, distinct, elliptic or oblong to obovate, equal, margins ± scarious. Receptacles flat to convex, deeply foveolate (margins of sockets raggedly toothed), epaleate. Ray florets (3-) 5(-8), pistillate, fertile; corollas yellow (laminae linear-elliptic). Disc florets 14-25+, bisexual, fertile; corollas yellow, tubes longer than to equaling narrowly funnelform throats, lobes 5, recurved, lance-linear; style branches: stigmatic areas continuous, apices ± dilated-truncate. Cypselae ± prismatic to obpyramidal, 5-nerved, strigillose to hirtellous; pappi persistent, of 60-80(-120), white, barbellulate bristles. x = 30.[3] [more]

Barnadesia

Barnadesia is a genus of in the Asteraceae family. It contains the following species: [more]

Bartlettia

A genus in the Kingdom Animalia. [more]

Bartlettina

Bartlettina is a genus of about 37 species of flowering plants in the Asteraceae family. They are native to tropical America although one species, B. sordida, has escaped from cultivation in places in New Zealand. [more]

Bebbia

Bebbia is a genus of plants in the daisy family; it is often considered monotypic, but it is sometimes treated as a genus of two or more species if Bebbia juncea is divided. The common name of B. juncea is sweetbush. It is an aromatic shrub of the southwestern United States and northern Mexico which bears plentiful yellow discoid flowers. [more]

Bellis

Bellis is a genus of 15 species of flowering plants in the family Asteraceae, native to Europe and the Mediterranean region and northern Africa. One species has been introduced into North America and others into other parts of the world. [more]

Bellium

[more]

Benitoa

Annuals, mostly 10-100 cm (taprooted). Stems erect, branched distally, stipitate-glandular (at least distally). Leaves cauline (at flowering) ; alternate; sessile or petiolate (bases of blades ± decurrent onto petioles) ; blades 1(-3+) -nerved, oblanceolate to linear (sessile, smaller, bractlike distally), margins entire or nearly so, faces stipitate-glandular. Heads radiate, borne singly or in open, corymbiform to paniculiform arrays. Involucres ± campanulate to turbinate or fusiform, (8-10 ×) 3-5 mm. Phyllaries 22-35+ in (4-) 5-6+ series, 1-nerved (flat), lanceolate to linear, unequal, herbaceous to ± cartilaginous, margins scarious, apices (slightly spreading to nearly squarrose) some or all bearing a tack-shaped gland. Receptacles flat, pitted, epaleate. Ray florets 5-8(-13+), pistillate, fertile; corollas yellow (occasionally suffused with red, becoming revolute). Disc florets 9-20+, functionally staminate; corollas yellow, tubes about equaling funnelform to campanulate throats, lobes 5, erect, lance-deltate; style-branch appendages lanceolate. Cypselae (mottled purple-brown) ± plumply clavate, ± triquetrous, 3-nerved, faces sericeous; pappi readily falling (fragile), of 2-8 whitish, subulate, barbellate scales (flattened bristles) in 1 series. x = 5.[4] [more]

Berkheya

[more]

Berlandiera

Berlandiera is a genus of flowering plants in the family Asteraceae. [more]

Bidens

Bidens is a genus of flowering plants in the family Asteraceae. It contains about 200 species. The common names beggarticks, black jack, burr marigolds, cobbler's pegs, Spanish needles, stickseeds, tickseeds and tickseed sunflowers refer to the achene burrs on the seeds of this genus, most of which are barbed. The generic name refers to the same fact; it means "two-tooth", from Latin bis "two" + dens "tooth". [more]

Bigelowia

A genus in the Kingdom Animalia. [more]

Blennosperma

Blennosperma is a genus of plants which contains only three species. They are known commonly as stickyseeds; indeed, the name Blennosperma is Greek for "slimy seed." Two of these species are endemic to California in the United States. The third is found only in Chile. [more]

Blennospora

[more]

Blepharispermum

Blepharispermum is a genus of in the Asteraceae family. It contains the following species: [more]

Blepharizonia

Annuals, 10-180+ cm. Stems ± erect. Leaves basal and cauline; proximal opposite (forming winter-spring rosettes, often withering before flowering), most alternate; ± sessile; blades narrowly spatulate to linear or distal lanceolate, margins entire or serrate, faces hirsute to strigose, sericeous, pilose, or villous (distal leaves ± stipitate-glandular and/or bearing tack-glands as well). Heads radiate, borne singly or in ± racemiform-paniculiform, paniculiform, or spiciform arrays. Peduncular bracts: tack-glands usually 1+ at tips and on margins. Involucres campanulate or obconic to ± globose, 4-9+ mm diam. Phyllaries 5-13 in 1 series, lanceolate or oblanceolate (± navicular), herbaceous, each ± 1/2 investing subtended ray floret proximally, abaxially canescent to hirsute or hispid to glabrate, usually bearing tack-glands as well. Receptacles flat, hirtellous, paleate (paleae falling, distinct, in 1 series, between rays and discs). Ray florets 5-13, pistillate, fertile; corollas whitish (often nerved with red to purple abaxially, lobes ± parallel, 1/4-1/2 lengths of laminae). Disc florets 5-35(-60+), bisexual, fertile; corollas whitish to purplish, tubes shorter than the funnelform throats, lobes 5, lanceolate (anthers ± dark purple; styles glabrous proximal to branches). Cypselae ± terete or ± obcompressed, basal attachments central, faces (10-ribbed) ± sericeous, apices not beaked; pappi: rays 0, or coroniform; discs 0, or coroniform, or of 12-20+, (reddish brown) subulate, ciliate to plumose scales. x = 14.[5] [more]

Blumea

[more]

Blumeopsis

[more]

Boltonia

Boltonia is a genus of plants in the Asteraceae family. [more]

Bombycilaena

[more]

Borrichia

Perennials, subshrubs, or shrubs, to 150 cm (rhizomatous, forming clonal colonies, roots fibrous, sometimes adventitious). Stems decumbent to erect, branched ± throughout (sap sticky-resinous). Leaves cauline; opposite; ± petiolate or sessile; blades (usually 1-nerved, sometimes obscurely 3- or 5-nerved) elliptic, linear, oblanceolate, obovate, or ovate (usually coriaceous or succulent), bases ± cuneate, margins entire or toothed (teeth often spine-tipped), faces glabrous or puberulent to villous and/or sericeous. Heads radiate, borne singly or (3-10) in cymiform arrays. Involucres globose or ovoid to hemispheric or broader, (5-) 8-13(-18+) mm diam. Phyllaries persistent, 10-45 in 2-3 series (outer larger, elliptic to oblanceolate or ovate, apices acute, cuspidate, obtuse, rounded, or spine-tipped). Receptacles convex, paleate (paleae lanceolate to ovate, ± conduplicate, partially enclosing cypselae, apices often ± pungent). Ray florets 7-30, pistillate, fertile; corollas yellow. Disc florets 20-75, bisexual, fertile; corollas yellow, tubes shorter than funnelform throats, lobes 5, lance-triangular (anthers black with orange glands on connectives). Cypselae (gray to black) ± obcompressed, or obpyramidal and 3- or 4-angled (faces faintly finely reticulate) ; pappi persistent or tardily falling, (stramineous) coroniform or cupular (3-4-angled). x = 14.[6] [more]

Bothriocline

[more]

Brachanthemum

[more]

Brachycome

Brachyscome is a of 65 species of shrub in the daisy family Asteraceae. 60 of these are found in Australia, the remainder in New Zealand and New Guinea. [more]

Brachyglottis

Brachyglottis is a genus of flowering plant in the Asteraceae family; a genus which has existed since November 29, 1775 when Johann Reinhold Forster & Georg Forster created the genus with this name from the Greek words brachus meaning short and glottis meaning "the vocal apparatus of the larynx" or tongue referring to the size of the ray florets. [more]

Brachylaena

Brachylaena is a genus of in the Asteraceae family. Notable species include: [more]

Brickellia

Brickellia is a genus of about 100 species of plants in the sunflower family (Asteraceae), known commonly as brickellbushes. They are found in North America, Mexico, and Central America. Many species are native to the American southwest, especially Texas. Brickellia is among the more basal lineages of the Eupatorieae and should not be assigned to a subtribe pending further research. [more]

Buphtalmum

[more]

Buphthalmum

[more]

Cacalia

The genus Cacalia L. is a nomen rejiciendum (rejected name) under the International Code of Botanical Nomenclature. Its species now reside in a few different genera. [more]

Cacaliopsis

Perennials, 15-90 cm (rhizomes fibrous-rooted; plants glabrous or sparsely to densely tomentose). Stems usually 1, erect. Leaves mostly basal; alternate; petiolate; blades palmately nerved (and lobed, lobes further digitately divided), ± reniform to orbiculate, ultimate margins toothed, abaxial faces lanate to floccose-tomentose, adaxial faces tomentulose and glabrescent or glabrous. Heads discoid, in racemiform to corymbiform or subumbelliform arrays. Calyculi 0. Involucres broadly turbinate to campanulate, 7-15+ mm diam. (broader in fruit). Phyllaries persistent, 8-25 in 1-2 series, erect to spreading, distinct, lanceolate to linear, margins scarious. Receptacles flat, foveolate, epaleate. Ray florets 0. Disc florets 20-50, bisexual, fertile; corollas yellow to orange, tubes longer than cylindric to funnelform throats, lobes 5, spreading, lanceolate; style branches: stigmatic areas continuous, apices with deltoid to conic appendages. Cypselae cylindric, 12-15-veined, glabrous; pappi readily falling or fragile, of 120-140, white, barbellate bristles. x = 30.[7] [more]

Cacosmia

Cacosmia is a of flowering plant in the Asteraceae family. It contains the following species: [more]

Cadiscus

[more]

Caesulia

[more]

Calea

CALEA may refer to: [more]

Calendula

Calendula ( Ca-l?n-du-la), pot marigold, is a genus of about 12?20 species of annual or perennial herbaceous plants in the daisy family Asteraceae, native to the area from Macaronesia east through the Mediterranean region to Iran. Calendula should not be confused with other plants that are also known as marigolds, such as corn marigold, desert marigold, marsh marigold, or plants of the genus Tagetes. [more]

Callicephalus

[more]

Callistephus

Callistephus () is a genus of flowering plants, in the Asteraceae (daisy family); the genus includes only one species, C. chinensis, the China Aster. [more]

Calotis

[more]

Calycadenia

Calycadenia is a genus of plants in the sunflower family known commonly as the western rosinweeds. These are found in western North America, where six of them are endemic to California, where they are mostly found in the Central Valley. Some species are quite rare. Western rosinweeds are small, ragged annual plants bearing numerous heads of small radiate flowers which may be white, yellow, or pinkish. [more]

Calycites

[more]

Calycoseris

Annuals, 5-30 cm; taprooted. Stems 1-3, erect or ascending, branched from bases; distal stems, branches, and involucres conspicuously dotted with short, stipitate, flat-topped glands that resemble tacks. Leaves basal and cauline; alternate; sessile; basal blades pinnately lobed (lobes narrow, linear, often delicate, spreading, margins entire, smooth) ; distal reduced to linear, entire bracts. Heads borne singly or in open, cymiform arrays. Peduncles (1-3 cm) not inflated, not bracteate. Calyculi of 8-16, reflexed, unequal bractlets (lengths to 1/2 phyllaries). Involucres campanulate, 5-12+ mm diam. Phyllaries 12-20 in 1 series, linear-lanceolate, equal, margins scarious, apices acute . Receptacles flat, smooth, bristly, epaleate (each floret subtended by 1 fine, capillary bristle). Florets ca. 25; corollas white or yellow (showy). Cypselae tan to brown, fusiform, beaked, ribs 5, separated by longitudinal grooves, faces glabrous or scabridulous; pappi (borne on denticulate cups at beak tips) falling (together), of 50-60+, white, basally connate, smooth bristles 5-8(-9) mm in 1 series. x = 7.[8] [more]

Calyptocarpus

Perennials, to 30 cm. Stems prostrate to decumbent, branched throughout. Leaves cauline; opposite; petiolate; blades (± 3-nerved) deltate to ovate or lanceolate, bases cuneate to truncate, margins toothed, faces ± scabrellous. Heads radiate, borne singly (in axils). Involucres obconic, 3-8 mm diam. Phyllaries persistent, 5 in 1(-2) series (linear to lanceolate, herbaceous). Receptacles convex, paleate (paleae persistent, scarious). Ray florets 3-8, pistillate, fertile; corollas pale yellow. Disc florets 10-20, bisexual, fertile; corollas yellow, tubes shorter than funnelform throats, lobes 4-5, ± deltate. Cypselae compressed or flattened, cuneate (faces often tuberculate) ; pappi persistent, of 2(-5+) stout awns. x = 12.[9] [more]

Campuloclinium

[more]

Canadanthus

Perennials, 30-100(-130) cm (rhizomatous). Stems ascending to erect, simple, ± densely villous, stipitate-glandular distally. Leaves cauline; alternate; sessile; blades 1-nerved, elliptic-lanceolate or -oblanceolate to (sometimes narrowly) oblanceolate or lanceolate, margins entire to serrate, abaxial faces glabrate to ± strigose, adaxial sparsely villous, (distal) stipitate-glandular. Heads radiate, usually in leafy, irregularly flat-topped, paniculiform to corymbiform arrays, sometimes borne singly. Involucres cylindro-campanulate, {(5-) 7-10 ×} 12-16 mm. Phyllaries 26-60+ in 3-5 series, 1-nerved (flat), lanceolate, subequal, outer ± foliaceous, inner herbaceous, bases not indurate, abaxial faces stipitate-glandular. Receptacles flat, pitted, epaleate. Ray florets 20-65 in 1 series, pistillate, fertile; corollas pale to dark purple or rose (coiling). Disc florets 40-65, bisexual, fertile; corollas whitish to pale yellow, turning purple, lobes sometimes purplish-tinged, ± ampliate, tubes shorter than tubular throats, lobes 5, erect, triangular; style-branch appendages narrowly triangular (hairy). Cypselae obconic-fusiform, compressed, 4-9-nerved, faces sparsely strigose, eglandular; pappi of 20-35+ cinnamon, equal, barbellate, attenuate bristles in 1 series. x = 9.[10] [more]

Canariothamnus

[more]

Cancrinia

[more]

Cancriniella

[more]

Cardopatium

[more]

Cardopatum

[more]

Carduncellus

[more]

Carduus

Carduus is a genus of about 90 species of thistles in the family Asteraceae, native to Europe, Asia and Africa. Carduus is Latin for a thistle. [more]

Carlina

Carlina (carline thistle) is a genus of about 30 species of thistles in the family Asteraceae, native to Europe, north Africa and Asia. The highest species diversity in the Mediterranean region, and only one species (C. biebersteinii) as far east as China. [more]

Carminatia

Annuals, 10-100+ cm. Stems erect (round to 4-angled or -ribbed), unbranched or sparingly branched (from proximal nodes, puberulent and/or villous to pilose, often in lines, sometimes glabrate). Leaves mostly cauline; usually opposite (proximal often withering before flowering, distal sometimes alternate) ; petiolate; blades (proximal) 3-5-nerved, triangular to broadly ovate (bases obtuse to cordate), margins subentire to dentate, faces glabrous or sparsely villous (at least along veins and on margins), not gland-dotted. Heads discoid, in spiciform or narrow, ± paniculiform arrays (subtended by lanceolate to linear, scalelike bracts). Involucres cylindric, [2-]3-4+ mm diam. Phyllaries persistent (spreading in age), (12-) 17-22+ in 3-4+ series, 3-nerved, lance-deltate or lanceolate to linear, unequal (apices acute to acuminate). Receptacles flat, epaleate. Florets 8-12; corollas greenish white to cream-colored, (bases slightly enlarged, tubes and throats not markedly differentiated externally) throats cylindric to filiform, lobes 5, triangular-ovate (very short) ; styles: bases not enlarged, glabrous, branches ± filiform (appendages linear or weakly clavate). Cypselae ± prismatic (usually 5-angled) or subcylindric, usually 5-ribbed, minutely puberulent; pappi usually readily falling, of 8-13 plumose bristles or setiform scales in 1 series (basally coherent or weakly connate, falling together or in groups). x = 10.[11] [more]

Carpesium

[more]

Carphephorus

Perennials, 20-60+ cm (caudices relatively thick, fibrous-rooted). Stems erect, not branched (± scapiform). Leaves basal and cauline; alternate; ± petiolate (basal) or sessile; blades (usually appressed to strictly ascending) usually 1-nerved, linear to oblanceolate or spatulate, margins entire or remotely dentate (involute in C. pseudoliatris), faces glabrous or hairy, often gland-dotted. Heads discoid, in corymbiform to paniculiform arrays. Involucres campanulate to hemispheric, 3-12 mm diam. Phyllaries persistent, (5-) 8-40 in (1-) 2-5+ series, not notably nerved, ovate to elliptic or lanceolate, unequal (herbaceous to scarious). Receptacles convex, paleate or epaleate. Florets 12-35; corollas usually lavender to dark magenta or pinkish purple, sometimes blue, throats funnelform (sometimes externally gland-dotted, lengths 4-6 times diams.) ; styles: bases not enlarged, glabrous, branches linear-clavate (± papillose distally). Cypselae prismatic, ca. 10-ribbed, scabrellous to hispid-strigose, sometimes gland-dotted; pappi persistent, of 35-40, barbellulate to barbellate (subequal) bristles in 1-2 series. x = 10.[12] [more]

Carphochaete

Subshrubs or shrubs, (8-) 20-45(-120+) [-300] cm. Stems erect [decumbent], branched from bases and/or ± throughout. Leaves cauline; opposite [alternate]; sessile; blades 1(-3) -nerved, narrowly elliptic or oblanceolate to linear, faces glabrate or puberulent, gland-dotted (in pits). Heads discoid, usually borne singly or in pairs [in ± cymiform arrays]. Involucres cylindric [turbinate], [2-]3-5 mm diam. Phyllaries persistent (at least outer), 8-12+ in 3-4+ series, not notably nerved, deltate-ovate to oblong, lanceolate, or linear, unequal. Receptacles flat to slightly convex (glabrous), epaleate [partially paleate]. Florets 3-4[-6+]; corollas white or pink to purple, throats narrowly funnelform (sometimes puberulent inside), lobes 5, narrowly triangular to linear (adaxially densely papillose) ; styles: bases enlarged, glabrous, branches ± filiform (appendages cylindric or slightly flattened, densely papillose). Cypselae subcylindric, [4-]8-10-ribbed, ± hirtellous; pappi persistent, of 0-5+ muticous, erose, lacerate, or lanceolate to subulate scales (1-4 mm) plus [5-]9-12+ aristate scales (10-15 mm) [coroniform]. x = 11, 12.[13] [more]

Carthamus

The Carthamus (Cár-tha-mus) genre has mostly Mediterranean thorny plants of the Asteraceae family. [more]

Cassinia

Cassinia is a large genus of plants in the family Asteraceae, most or all of which are native to the Southern Hemisphere. It was named for French botanist Alexandre de Cassini. [more]

Catananche

Catananche is a genus of the botanical family Asteraceae. [more]

Celmisia

Celmisia is a genus of perennial herbs or subshrubs, in the family Asteraceae. There are around 70 species; most are endemic to New Zealand, between four and 10 are endemic to Australia. The genus was first formally described by botanist Alexandre de Cassini in 1813. [more]

Centaurea

Centaurea ( "Cen-tau-r?-a") is a genus of between 350 and 600 species of herbaceous thistle-like flowering plants in the family Asteraceae. Members of the genus are found only north of the equator, mostly in the Eastern Hemisphere; the Middle East and surrounding regions are particularly species-rich. Common names for this genus are starthistles, knapweeds, centaureas and the more ambiguous "bluets"; a vernacular name used for these plants in parts of England is "loggerheads". The Plectocephalus group ? possibly a distinct genus ? is known as basketflowers. "Cornflowers" is used for a few species, but that term more often specifically means C. cyanus (sometimes also called "Basket Flower"). And while one sometimes finds the name "centauries", this properly refers to the unrelated plant genus Centaurium. [more]

Centaurodendron

Centaurodendron is a genus of in the Asteraceae family. It contains the following species: [more]

Centipeda

[more]

Centratherum

Perennials (or functionally annuals), 1-3(-8+) dm (stems sometimes rooting at proximal nodes). Leaves cauline; sessile or petiolate, petioles ± winged; blades ovate to obovate, lanceolate, or linear, bases ± cuneate, margins toothed, apices acute, abaxial faces usually ± hirtellous to strigillose or tomentose, sometimes nearly glabrous, adaxial faces sparsely scabrellous or glabrate, both usually resin-gland-dotted. Heads discoid (pedunculate, each subtended by 3-8+, ± foliaceous bracts), borne singly. Involucres ± hemispheric, 6-12(-18+) mm diam. Phyllaries 24-50+ in 4-8+ series, each proximally firm, distally ± scarious, the outer ovate to deltate or lanceolate, inner oblong to lanceolate, margins entire, tips rounded to acute, usually apiculate to seta-tipped or attenuate-spinose, abaxial faces glabrous or sparsely strigillose to tomentose and usually ± resin-gland-dotted distally. Florets 30-50(-100+) ; corollas usually lavender to purplish (rarely white), tubes longer than funnelform throats, lobes 5, lance-linear, ± equal. Cypselae ± columnar to plumply clavate, 8-10-ribbed, glabrous, often resin-gland-dotted; pappi caducous, of 20-40 lance-linear to subulate scales. x = 16.[14] [more]

Cephalorrhynchus

[more]

Chaenactis

Chaenactis is a genus of plants in the daisy family which are known generally as pincushions or dustymaidens. These wildflowers are native to western North America, especially the desert southwest of the United States. There are 18 species, many of which are quite variable in appearance. They are generally aster-like in appearance with many disc florets in each head. There may be only disc florets, but sometimes there are also enlarged ray florets along the edges of the corolla. They may be white to yellow or pink. [more]

Chaetadelpha

Chaetadelpha is a monotypic genus in the sunflower family containing the single species Chaetadelpha wheeleri, or Wheeler's skeletonweed. This brushy perennial plant is native to the western United States. It forms a low bush with plentiful erect stems covered in very narrow, long and pointed leaves. Branchlets emerge from the stems and each bears a cylindrical flower which opens at the end into a star-shaped white or pale purple flower with five ray florets. The center of each head is filled with curly pollen-dusted anthers. This species is found most often in sand and scrub, particularly in desert regions. [more]

Chaetanthera

[more]

Chaetopappa

Annuals or perennials, 5-30 cm (sometimes glandular) ; taprooted or rhizomatous. Stems erect or decumbent, branched, strigose to hispido-pilose. Leaves basal (sometimes withering by flowering) and cauline; alternate; sessile or petiolate; blades 1-nerved, linear to oblanceolate-obovate or spatulate, margins entire, faces glabrous, strigose, hispidulous, or hispido-pilose, sometimes stipitate-glandular. Heads radiate, borne singly (terminal, not crowded). Involucres cylindro-turbinate to hemispheric, (3.8-6.5 ×) 2-10 mm. Phyllaries 10-50 in 2-6 series, midnerves not evident or indurate, elliptic to linear-lanceolate, unequal, margins prominently whitish-scarious, faces strigose to glabrate. Receptacles flat or slightly convex, smooth, epaleate. Ray florets 6-24(-30), pistillate, fertile; corollas usually white, sometimes bluish, usually maturing or drying blue or purple (coiling at maturity). Disc florets 5-25, bisexual and fertile or functionally staminate; corollas yellow, tubes much shorter than tubular-funnelform throats, lobes 5, erect, deltate; style-branch appendages broadly to narrowly triangular. Cypselae cylindric to narrowly obovoid, terete to compressed, 2-5-, 8-, or 10-nerved, faces strigose, sometimes gland-dotted; pappi persistent, either in 1 series, of (20-) 24-26(-30; usually multiples of 5) barbellate bristles, or hyaline crowns of basally fused scales, or minute, erose, sometimes cuplike crowns, or thickened rings, or in 2 series, outer of (4-) 5(-8) minute or broad, white-hyaline or scarious, sometimes irregular scales plus inner of (4-) 5(-8) alternating, tawny, sometimes thick, sometimes barbellate bristles. x = 8.[15] [more]

Chaetoseris

[more]

Chamaechaenactis

Perennials, 2-7(-9) cm (to 10-20+ cm across). Stems mostly subterranean (caudices relatively thick, branched; aerial stems essentially peduncles). Leaves mostly basal; alternate; petiolate; blades (1- or 3-nerved) cordate, elliptic, ovate, or rounded, margins entire or distally ± crenate, revolute to ± plane, faces ± strigose and gland-dotted, adaxial sometimes glabrescent. Heads discoid, borne singly. Involucres ± obconic, 6-15 (10-23 pressed) mm diam. Phyllaries 11-15 in 2 series (± erect, sometimes spreading in senescence, oblong to oblanceolate, ± unequal, herbaceous, abaxially densely villous, obscurely glandular). Receptacles convex, knobby, epaleate. Ray florets 0. Disc florets 10-30+, bisexual, fertile; corollas white to pinkish, tubes shorter than ± cylindric throats, lobes 5, ± deltate (style branches stigmatic in 2 lines, appendages linear-oblong, blunt). Cypselae clavate, ± quadrangular with 8-12 obscure nerves, densely piloso-strigose, eglandular; pappi persistent, of 7-11, (distinct) oblanceolate to narrowly spatulate, erose scales in 2 series (midnerves prominent). x = 16.[16] [more]

Chamaepeuce

Ptilostemon (syn. Chamaepeuce DC.) is a genus of the botanical family Asteraceae. [more]

Chamomilla

Matricaria chamomilla or German chamomile, also spelled camomile, is an annual plant of the composite family Asteraceae. Synonyms are: Chamomilla chamomilla, Chamomilla recutita (correct name according to the Flora Europaea), Matricaria recutita, and Matricaria suaveolens. [more]

Chaptalia

Perennials, 3-40(-100) cm (fibrous-rooted, sometimes rhizomatous; stems ± scapiform). Leaves basal; sessile or ± petiolate; blades elliptic or elliptic-obovate to obovate, obovate-elliptic, ovate, or sublyrate, bases cuneate, margins entire or denticulate, serrulate, or dentate to lobed, abaxial faces usually covered with dense wool, adaxial faces glabrous or glabrescent. Heads quasi-radiate or ± disciform (see florets; chasmogamous, produced well after rosette leaves, erect in flowering, nodding or erect in bud and again in fruit), borne singly. Involucres cylindric to campanulate, (7-) 9-15+ mm (larger in fruit). Phyllaries in 2-5+ series, lanceolate to lance-linear, unequal, apices acute. Receptacles flat to convex, foveolate or smooth, glabrous, epaleate. Florets (dimorphic or trimorphic in 1-2 outer, pistillate zones plus 1 inner, bisexual or functionally staminate zone) : outer pistillate-zone florets 9-38(-90+) in 1-2(-3) series, fertile, corollas creamy white to purple (sometimes with adaxial midstripe), zygomorphic (liguliform or bilabiate, inner lip often bifurcate, limbs sometimes reduced, style branches terete and linear to flattened and oblong) ; inner pistillate-zone florets 0 or 3-50 in 1-2 series, fertile, corollas usually ± zygomorphic (with reduced laminae and inner lips), sometimes reduced to tubes; innermost florets usually bisexual and fertile, sometimes functionally staminate, 15-40, corollas whitish to pinkish, usually zygomorphic (2-lipped, lobes recurved or coiling), sometimes nearly actinomorphic (lobes ± equal or lobes ± 0) ; anther basal appendages entire, apical appendages lanceolate; style branches relatively short (abaxially pilose). Cypselae fusiform, often slightly flattened, distally ± tapered into necks or beaks (0.5-1.6[-3] times bodies), ribs mostly 4-12, faces glabrous or hairy (hairs duplex, relatively short, apices rounded to apiculate), not glandular; pappi of 50+ stramineous to pinkish, barbellulate bristles. x = 24.[17] [more]

Chardinia

[more]

Chartolepis

[more]

Cheirolophus

The Maltese Centaury or Maltese Rock-centaury (Cheirolophus crassifolius) is a species of in the Asteraceae family. It is monotypic within the genus Cheirolophus. It is the national plant of Malta, where it is endemic. Its natural habitats are Mediterranean-type shrubby vegetation and rocky shores. It is threatened by habitat loss. [more]

Chevreulia

The Clubmoss Cudweed (Chevreulia lycopodioides) is a species of in the Asteraceae family. It is monotypic within the genus Chevreulia. It is found only in Falkland Islands. Its natural habitats are temperate shrubland and temperate grassland. [more]

Chichorium

[more]

Chloracantha

Perennials or subshrubs (commonly appearing herbaceous), 50-150(-250) cm, sometimes glaucous, glabrous or glabrate (forming large clones; stoutly rhizomatous). Stems erect (strict), lateral branches sharply ascending, often modified to thorns. Leaves cauline (early withering) ; alternate; sessile; blades 1-nerved, oblanceolate, margins entire or rarely with 1-2 pairs of small teeth. Heads radiate, borne singly in loose corymbo-paniculiform arrays. Involucres broadly turbinate to hemispheric, 4.5-7.5 × 5-6 mm. Phyllaries 20-55 in 4-5 series, (1-) 3(-5) parallel-nerved (nerves orange-resinous; flat), oblong-elliptic to lanceolate, unequal, margins hyaline (apices rounded to lanceolate), faces glabrous. Receptacles shallowly convex, smooth, epaleate. Ray florets 20-33 in 1(-2) series, pistillate, fertile; corollas white (coiling at maturity). Disc florets (13-) 20-70, bisexual, fertile; corollas yellow (with orange resin ducts), tubes 2 times longer than narrowly funnelform throats, lobes 5, erect to spreading, deltate; style-branch appendages acute to deltate. Cypselae fusiform-cylindric, slightly compressed, 5(-6) -nerved, faces glabrous; pappi persistent, of 30-60 tawny, barbellate, apically attenuate bristles in 1-2 series, usually plus shorter outer setae. x = 9.[18] [more]

Chondrilla

Chondrilla is the scientific name shared by two genera of life-forms: [more]

Chromolaena

Perennials or shrubs (sometimes scandent), 20-250 cm (fibrous-rooted). Stems erect or clambering, sparsely to densely branched. Leaves cauline; opposite [alternate, verticillate]; petiolate or sessile; blades usually 3-nerved from bases, mostly deltate to ovate or elliptic, sometimes linear, margins dentate or lobed, faces glabrous or puberulent to tomentose, sometimes gland-dotted. Heads discoid, in corymbiform to thyrsiform arrays. Involucres cylindric [campanulate to hemispheric], 2-7 mm diam. Phyllaries usually readily falling (at least in fruit), 18-65+ in 4-6+ series, 3-5-nerved, ovate to oblong or lanceolate, unequal (papery or herbaceous). Florets [6-]15-40[-75]; corollas white or purple to blue, lavender, or reddish, throats cylindric (lengths 3-4 times diams.) ; styles: bases not enlarged, glabrous, branches linear to linear-clavate. Receptacles flat to convex, paleate or epaleate. Cypselae prismatic, (3-) 5-ribbed, scabrellous, usually gland-dotted as well; pappi persistent, of ca. 40 barbellate bristles in 1 series. x = 10.[19] [more]

Chrysactinia

Subshrubs or shrubs, 10-40[-80] cm (evergreen). Stems erect, strictly branched. Leaves cauline; mostly alternate [opposite]; blades simple [pinnate], linear to clavate or acerose (± fleshy), margins entire, faces usually glabrous, sometimes puberulent (oil-glands marginal or submarginal). Heads radiate, borne singly. Calyculi 0. Involucres turbinate to hemispheric, 3.5-5[-8] mm diam. Phyllaries persistent, 8-14 in ± 2 series (distinct to bases, linear to lance-linear [ovate], carinate, each usually bearing 1-5 oil-glands). Receptacles convex to hemispheric, ± pitted, rarely paleate (paleae readily falling). Ray florets 8(-13), pistillate, fertile; corollas bright yellow. Disc florets 15-70, bisexual, fertile; corollas yellow to orange, tubes much shorter than cylindro-funnelform throats, lobes 5, lance-deltate. Cypselae cylindric to fusiform, strigillose or glabrescent; pappi persistent, of [20-]30-40 bristles in ± 1 series. x = 15.[20] [more]

Chrysactinium

[more]

Chrysanthellum

[more]

Chrysanthemoides

Shrubs or trees (evergreen), 50-300+ cm. Stems erect, glabrous or ± tomentose [spiny]. Leaves ± petiolate; blades ovate or elliptic to orbiculate, obovate, or oblanceolate, margins usually denticulate, sometimes entire, faces usually ± arachnose and glabrate, sometimes woolly or glabrous. Heads borne singly or in loose, corymbiform arrays. Involucres ± hemispheric or broader, 9-12+ mm diam. Phyllaries 12-24+ in 2-3 series, deltate or lanceolate to ovate, oblong, or linear. Receptacles flat to convex. Ray florets 5-13 in 1 series; corollas yellow, laminae ± ovate to elliptic or linear. Disc florets 30-80+, functionally staminate; corollas yellow, tubes (± pilosulous) shorter than ± campanulate throats. Cypselae ± globose, fleshy (blue-black, becoming brown, drupelike). x = 10.[21] [more]

Chrysanthemum

Chrysanthemums, often called mums or chrysanths, are of the genus (Chrysanthemum) constituting approximately 30 species of perennial flowering plants in the family Asteraceae which is native to Asia and northeastern Europe. [more]

Chrysocoma

[more]

Chrysogonum

Perennials, 2-30(-50) cm (aerial stems from fibrous-rooted rhizomes to 5 cm). Stems erect to erect-ascending (flowering) or prostrate (vegetative stolons), branched from bases or ± throughout (villous). Leaves basal and cauline; opposite; petiolate; blades elliptic-ovate to deltate-ovate, bases cordate or truncate to cuneate, margins crenate, faces hairy. Heads radiate, borne singly or in pairs. Involucres cupulate-hemispheric, 7-10 mm diam. Phyllaries persistent (outer), 8-10 in 2 series (outer spreading, oblong-oblanceolate, foliaceous, inner erect, greenish, smaller, ± scarious). Receptacles flat to shallowly convex, paleate (paleae oblanceolate, scarious). Ray florets 5(-6), pistillate, fertile; corollas yellow. Disc florets 25-50, functionally staminate; corollas yellow, tubes shorter than narrowly funnelform throats, lobes 5, deltate. Cypselae (blackish brown) strongly obflattened, obovoid to obovate (each basally adnate to 1 inner phyllary, 3 paleae, and 3 disc florets, the "cypsela-complexes" falling as units) ; pappi persistent, coroniform (asymmetric). x = 16.[22] [more]

Chrysoma

Shrubs, 50-100 cm (evergreen), glabrous, resinous. Stems erect, branched. Leaves cauline; alternate; sessile; blades 1-nerved, oblanceolate to narrowly elliptic (bases sometimes attenuate), margins entire, faces gland-dotted, resinous (covered by reticulum of subisodiametric areoles, each areole surrounded by sunken border). Heads usually radiate, sometimes discoid, in dense (terminal), cymiform arrays. Involucres cylindric, (5-6 ×) 2-2.5 mm. Phyllaries 8-12 in 3-4(-5) series (in vertical ranks), erect, loose, stamineous, 1-nerved (midnerves orange-resinous from bases to apices; flat), lanceolate, unequal, margins scarious. Receptacles flat, shallowly pitted, epaleate. Ray florets (0-) 1-2(-3), pistillate, fertile; corollas yellow. Disc florets (2-) 3-4(-5), bisexual, fertile; corollas yellow, tubular-funnelform, tubes longer than throats, lobes 5, spreading-recurving, lanceolate; style-branch appendages linear-triangular (closely papillate). Cypselae (brownish ) turbinate-oblong, nearly terete, 8-10-ribbed, densely strigoso-sericeous; pappi persistent, of 40-60 tan, unequal, barbellate, apically attenuate bristles in 2-3 series. x = 9.[23] [more]

Chrysopsis

A Golden aster, old genus Chrysopsis, and new Genus Heterotheca is a member of the Asteraceae family. This is a new world genus of the Asteraceae family. [more]

Chrysothamnus

Chrysothamnus, common name Rabbitbrush, is a member of the Asteraceae family. It is a deciduous shrub, similar to sagebrush with a native range in the arid western United States and Mexico. It is known for its bright white or yellow flowers in late summer. [more]

Chuquiraga

Chuquiraga is a genus of in the Asteraceae family. It contains the following species: [more]

Cicerbita

[more]

Cichorium

Cichorium is a genus of flowering plants in the family Asteraceae. The species are commonly known as chicory or endive ? there are two cultivated species, and four to six wild species. [more]

Cineraria

Cineraria is now generally treated as a genus of about 50 species of flowering plants in the family Asteraceae, native to southern Africa. The genus includes herbaceous plants and small subshrubs. [more]

Cirsium

Cirsium is a genus of perennial and biennial flowering plants in the Asteraceae, one of several genera known commonly as thistles. They are more accurately known as Plume thistles. These differ from other thistle genera (Carduus, Silybum and Onopordum) in having feathered hairs to their achenes. The other genera have a pappus of simple unbranched hair. [more]

Cladanthus

Cladanthus is a genus of the botanical family Asteraceae. [more]

Clappia

Clappia is a genus of gastropod in the Hydrobiidae family. [more]

Clibadium

Clibadium is a genus of in the Asteraceae family. It contains the following species: [more]

Cloiselia

[more]

Cnicus

Cnicus benedictus (St. Benedict's thistle, blessed thistle, holy thistle or spotted thistle), was the sole species in the genus Cnicus, but has been reclassified as Centaurea benedicta. (Note, this is not the same as milk thistle.) [more]

Columbiadoria

Subshrubs 30-60 cm; taproots stout, bases woody, branched. Stems strictly erect, mostly simple, glabrous or glabrate to hirtellous. Leaves basal (usually not persistent) and cauline; alternate ; sessile; blades oblanceolate, gradually reduced distally, margins entire, 1-nerved (net-nerved), sparsely scabroso-hispidulous, eglandular or obscurely gland-dotted, not resinous. Heads radiate, in racemiform or loosely spiciform to loosely corymbiform arrays. Involucres cylindro-turbinate, 8-11 × 5-6 mm . Phyllaries 35-40 in 5-6 series, 1-nerved (not evident; convex, not keeled or only slightly so on distal 1 / 2 ), lanceolate, unequal, proximal 2 / 3 white-indurate, margins herbaceous, convex, midnerves not evident (apices green), glabrous. Receptacles flat, smooth, epaleate. Ray florets 5-8, pistillate, fertile; corollas yellow (weakly if at all coiling). Disc florets 15-25, bisexual, fertile; corollas yellow, tubes shorter than narrowly funnelform throats, lobes 5, erect, deltate; style-branch appendages linear-lanceolate (5-6 times longer than stigmatic lines, papillate distally). Cypselae narrowly oblong, slightly compressed, 8-nerved, moderately strigose; pappi persistent, of 40-50, tan, barbellate, attenuate bristles in 1 series.[24] [more]

Commidendrum

Commidendrum is a of four species of trees and shrubs in the family Asteraceae endemic to the island of Saint Helena in the South Atlantic Ocean. The vernacular name is gumwood or scrubwood. [more]

Condylidium

[more]

Condylopodium

Conoclinium

Perennials, 50-200 cm (usually rhizomatous, colonial, rhizomes relatively slender). Stems erect to decumbent (sometimes rooting at proximal nodes), not much branched distal to bases. Leaves cauline; opposite; petiolate; blades usually 3-nerved from bases, deltate, oblanceolate, ovate, ovate-deltate, oblong, or triangular, margins dentate or lobed (to dissected in C. dissectum), faces glabrate to puberulous, villosulous, or hispidulous, gland-dotted. Heads discoid, in tight, corymbiform arrays. Involucres hemispheric, 3-6 mm diam. Phyllaries persistent, ca. 25 in 2-3 series, obscurely 2-3-nerved, lanceolate to linear, ± equal (herbaceous). Receptacles conic, epaleate. Florets 35-70+; corollas usually blue to purple or violet, rarely white, throats narrowly funnelform (lengths ca. 4 times diams.) ; styles: bases not enlarged, glabrous, branches filiform to linear-clavate. Cypselae prismatic (bases narrowed), 5-ribbed, glabrous or sparsely gland-dotted and/or hispidulous; pappi persistent, of ca. 30 barbellate bristles in 1 series. x = 10.[25] [more]

Conyza

Conyza (horseweed, butterweed or fleabane) is a genus of about 50 species of flowering plants in the family Asteraceae, native to tropical and warm temperate regions throughout the world, and also north into cool temperate regions in North America and eastern Asia. The genus is closely related to Erigeron (also known as fleabanes). [more]

Coreocarpus

Perennials [subshrubs], 10-70(-120+) cm. Stems 1, erect [sprawling], branched throughout. Leaves cauline; opposite; obscurely petiolate; blades 1-2-pinnately or -pedately lobed (ultimate lobes narrowly lanceolate to filiform [lanceolate to ovate]), ultimate margins entire, faces usually glabrous, rarely hairy [pilose]. Heads usually radiate, sometimes discoid, in open, corymbiform to paniculiform arrays [borne singly]. Calyculi of (0-) 1-3+ linear to subulate, herbaceous bractlets. Involucres ± campanulate to turbinate, 3-5+ mm diam. Phyllaries persistent, 5-8[-13+] in ± 2 series, distinct, (green to stramineous with red-brown to purplish nerves) ovate to oblong, ± equal, membranous, margins scarious. Receptacles flat to convex, paleate; paleae falling, (stramineous with red-brown striae) lance-linear to lanceolate, membranous to scarious [adnate to cypselae]. Ray florets 0, or [1-]5-8, pistillate, fertile [styliferous and sterile or neuter]; corollas [orange] yellow to pale yellow or white [purplish]. Disc florets [5-]12-25[-30+], bisexual, fertile; corollas yellow with red-brown nerves, tubes shorter than narrowly funnelform throats, lobes 5, ± deltate. Cypselae (blackish or red-brown to stramineous) obcompressed, ± oblanceolate, faces smooth or ± granular-papillate, margins ± winged, wings ± corky, ± pectinate [entire]; pappi 0, or persistent, of 1-2 retrorsely [antrorsely] barbellate awns. x = 12.[26] [more]

Coreopsis

Tickseed is the common name for the plant Coreopsis, a group of 35 species of flowering plants in the Family Asteraceae and Genus Coreopsis. Twenty-eight species are native to the North America and the others come from Central and South America. The flowers are usually yellow with a toothed tip. The name is derived from the Greek word koris, meaning Bedbug. The plants are also popularly called "Calliopsis." [more]

Corethrogyne

Perennials or subshrubs, mostly 10-100 cm (taprooted, eventually ± woody, branched). Stems decumbent to ascending or erect, branched from bases or ± throughout, usually densely white-tomentose, sometimes glabrate and/or glandular distally. Leaves cauline (at flowering), often crowded at bases of stems; alternate; sessile or bases of blades ± decurrent onto petioles; blades 1-nerved, ovate to spatulate, oblanceolate, or linear (sessile, smaller, bractlike distally), margins entire or toothed, faces glabrous or hairy, sometimes stipitate-glandular and/or gland-dotted as well. Heads radiate, borne singly or 2-20+ in loose corymbiform arrays. Involucres hemispheric to campanulate, turbinate, or cylindric, (6-14 ×) 3-10 mm. Phyllaries 30-90+ in 3-9 series, 1-nerved (flat), narrowly lanceolate to linear, unequal, cartilaginous to scarious, margins little, if at all, scarious (apices often spreading to squarrose, herbaceous), abaxal faces usually hairy (floccose-tomentulose, glabrate, glabrescent, or tomentose) and gland-dotted, granular-glandular, or stipitate-glandular. Receptacles convex, pitted, epaleate. Ray florets 10-43 in 1 series, neutral; corollas purplish through violet and pink to white (laminae ± linear). Disc florets 12-120+, bisexual, fertile; corollas yellow (actinomorphic), tubes shorter than very narrowly cylindric throats, lobes 5, erect, narrowly lanceolate (equal) ; style-branch (linear, yellowish-hispid) appendages blunt to subulate (lengths 1 / 3 - 1 / 2 stigmatic bands). Cypselae cuneiform to linear, not compressed, 5-7-ribbed, faces puberulent to pilose; pappi persistent, of 35-65, distinct, brownish to reddish, unequal, coarse, barbellate, apically attenuate bristles in 1-2 series. x = 5.[27] [more]

Corymbium

[more]

Cosmos

Annuals [perennials or subshrubs], 30-250 cm. Stems usually 1, erect or ascending, branched distally or ± throughout. Leaves mostly cauline; opposite; petiolate or sessile; blades usually 1-3-pinnately lobed [undivided], ultimate margins usually entire, faces usually glabrous, sometimes glabrate, hispid, puberulent, or scabridulous. Heads radiate, borne singly or in corymbiform arrays. Calyculi of [5-]8 basally connate, ± linear to subulate, herbaceous (striate) bractlets. Involucres hemispheric or subhemispheric [cylindric], 3-15 mm diam. Phylla­ries persistent, [5-]8 in ± 2 series, distinct, lanceolate, lance-oblong, lance-ovate, or oblong, ± equal, membranous or herbaceous, margins ± scarious. Receptacles flat, paleate; paleae falling, linear, flat or slightly concave-convex, scarious (entire). Ray florets [0, 5] 8 (more in "double" cultivars), neuter; corollas white to pink or purple, or yellow to red-orange. Disc florets 10-20[-80+], bisexual, fertile; corollas yellow [orange] (at least distally), tubes shorter than funnelform throats, lobes 5, ± deltate (staminal filaments hairy near anthers; style branches linear, flattened, thicker distally, hirtellous, appendages relatively slender). Cypselae (dark brown or black) relatively slender, quadrangular-cylindric or -fusiform [outer somewhat obcompressed], sometimes slightly arcuate, attenuate-beaked, not winged [winged], faces glabrous or hispid to scabridulous or ± setose, sometimes papillate, usually with 1 groove; pappi persistent [falling], of 2-4[-8] retrorsely [antrorsely] barbed awns, sometimes 0. x = 12.[28] [more]

Cotula

Cotula is a genus of flowering plant in the Asteraceae family. It includes about 55 species of plants known generally as water buttons or buttonweeds. Most are endemic to South Africa. [more]

Cousinia

The genus Cousinia of the tribe Cardueae (= ) is in its current circumscription one of the larger genera in the Asteraceae, with approximately 600-700 species distributed in central and western Asia. [more]

Craspedia

Craspedia is a genus of commonly known as billy buttons or woollyheads. They are native to Australia and New Zealand where they grow in a variety of habitats from sea level to the alps. The genus is found in every state of Australia except the Northern Territory. In New Zealand, Craspedia is found south from about East Cape in the North Island to Stewart Island. It also occurs on Campbell Island 660 km S of Stewart Island, and the Chatham Islands, 800 km E of East Cape. Craspedia are rosette-forming herbs with secondarily compound capitula (glomerules) that are borne on erect, unbranched scapes. The glomerules or flower-heads are hemispherical to spherical (like pom poms) and are formed of a massive aggregation of tiny flowers (florets). Most species are perennial with one species recorded as annual. Twenty three-species are currently accepted, six from New Zealand and 17 from Australia. Leaves have considerable variation in form, they range in color from white through to grass green, and are often covered in fine hairs. [more]

Crassocephalum

Crassocephalum is a genus the common names of whose members include ragleaf, thickhead, and bologi. Several species are raised as leaf vegetables and used for medicine, especially in West Africa. [more]

Cremanthodium

[more]

Crepis

Crepis is a genus of about 200 annual and perennial flowering plants found in the family Asterales resembling Dandelion, the main differences being that Hawksbeards have multiple flowers per plant as well as branching stems. The name Crepis derives from Greek, meaning 'shoe'. In some parts of the world the genus is known as Hawksbeard. [more]

Critonia

Critonia is a genus of flowering plant in the Asteraceae family. It contains the following species: [more]

Critoniopsis

Critoniopsis is a genus of in the Asteraceae family. It contains the following species: [more]

Cronquistianthus

Cronquistianthus consists of 25 species of shrubs native to the Andes in Colombia, Ecuador, and Peru. [more]

Croptilon

Annuals or perennials, 20-150 cm; taprooted. Stems decumbent to erect, usually branched, usually sparsely hispid-hirtellous (hairs spreading to upturned), stipitate-glandular or eglandular. Leaves basal and cauline; alternate; sessile; blades 3-nerved, linear or narrowly oblanceolate to lanceolate, margins entire to serrate (apices acute), abaxial faces arachnoid in lacunae. Heads borne singly or in loose, widely branched, paniculiform arrays. Involucres narrowly turbinate to subcylindric or campanulate, 4-8 × 2-8(-10) mm. Phyllaries 22-40 in 3-5 series, 1-nerved (midnerves thin, slightly orange), lanceolate to linear-lanceolate, strongly unequal, herbaceous, margins scarious, flat, faces glabrous to hirsute or glandular. Receptacles flat, pitted, epaleate. Ray florets 5-30, pistillate, fertile; corollas bright yellow to yellow-orange (coiling at maturity). Disc florets 6-108, bisexual, fertile; corollas yellow, tubes shorter than tubular throats, lobes 5, triangular, erect to spreading; style-branch appendages linear-triangular. Cypselae (brown to purplish) turbinate, terete to weakly angled, 6-14+-nerved, faces strigose to sericeous; pappi persistent, of 30-35 tawny to reddish brown, equal, barbellate, apically attenuate bristles in 1 series. x = 7, 6, 5, 4.[29] [more]

Crossothamnus

Crossothamnus is a genus of in the Asteraceae family. It contains the following species: [more]

Crupina

Annuals, 20-100 cm, not spiny. Stems erect, openly branched distally. Leaves basal and cauline (distally reduced to bracts) ; sessile (basal) or petiolate (cauline) ; blade margins entire or toothed to pinnately divided (basal) or 1-2-pinnately divided (cauline). Heads radiant, borne singly or clustered at branch tips. Involucres cylindric to ovoid. Phyllaries overlapping in 4-6 series, unequal, oblong-lanceolate, acute, unappendaged . Receptacles flat. epaleate, bearing subulate scales. Florets 3-15, outer 2-14 neuter, inner 1-2 fertile; corollas purple, ± bilateral, tubes slender, gradually expanded into narrowly funnelform throats. lobes linear; anther bases short-tailed, apical appendages narrowly triangular; style branches: fused portions with minutely puberulent nodes, distinct portions very short, triangular. Cypselae cylindric [or ± compressed], bases puberulent, faces smooth, not ribbed, distally softly pubescent, attachment scars basal. or lateral. ; pappi persistent. present only on fertile florets, outer 1-2 series of numerous stiff, minutely barbed bristles. inner of 5-10 short lacerate-dentate scales. x = 28, 30.[30] [more]

Cuatrecasanthus

Cuatrecasanthus is a genus of in the Asteraceae family. It contains the following species: [more]

Cullumia

[more]

Cupularia

Cyathocline

Cyathomone

Cyathomone is a genus of in the Asteraceae family. It contains the following species: [more]

Cylindrocline

Cylindrocline is a genus of in the Asteraceae family. It contains the following species: [more]

Cymbolaena

Cynara

Cynara is a genus of about 10 species of thistle-like perennial plants in the family Asteraceae, originally from the Mediterranean region, northwestern Africa, and the Canary Islands. [more]

Dahlia

Dahlia is a genus of bushy, tuberous, herbaceous perennial plants native to Mexico, Central America, and Colombia. A member of the Asteraceae or Compositae, dicotyledonous plants, related species include the sunflower, daisy, chrysanthemum and zinnia. There are at least 36 species of dahlia, with hybrids commonly grown as garden plants. Flower forms are variable, with one head per stem; these can be as small as 2 in (5.1 cm) in diameter or up to 1 ft (30 cm) ("dinner plate"). This great variety results from dahlias being octoploids?that is, they have eight sets of homologous chromosomes, whereas most plants have only two. In addition, dahlias also contain many transposons - genetic pieces that move from place to place upon an allele - which contributes to their manifesting such great diversity. [more]

Darwiniothamnus

Darwiniothamnus is a genus of in the Asteraceae family. It contains the following species: [more]

Dasphyllum

Dasyphyllum is a genus of in the Asteraceae family. It contains the following species: [more]

Dasyphyllum

Dasyphyllum is a genus of in the Asteraceae family. It contains the following species: [more]

Delairea

Delairea is a plant genus within the family Asteraceae. It is classified within tribe Senecioneae. It contains only one species, Delairea odorata, which was previously included in the genus Senecio as Senecio mikanioides, and is known as cape ivy in some parts of the world and German ivy in others, [more]

Dendranthema

Chrysanthemums, often called mums or chrysanths, are of the genus (Chrysanthemum) constituting approximately 30 species of perennial flowering plants in the family Asteraceae which is native to Asia and northeastern Europe. [more]

Dendrocacalia

Dendrophorbium

Dendrophorbium is a genus of in the Asteraceae family. It contains the following species: [more]

Dendroseris

Dendroseris is a genus of in the Asteraceae family. It contains the following species: [more]

Dichaetophora

Annuals, 4-24 cm (taprooted). Stems erect or decumbent, simple or branched, sparsely strigose. Leaves basal and cauline; alternate; petiolate to subpetiolate; blades 1-nerved, oblanceolate, margins entire, apices mostly obtuse, faces sparsely strigose. Heads radiate, borne singly. Involucres hemispheric, (3-4.5 ×) 5-7 mm. Phyllaries 16-25 in 2 series, 1-nerved (midnerves not evident; flat), broadly oblanceolate to lanceolate, subequal, margins broadly scarious, hyaline (apices acute to obtuse), glabrous. Receptacles convex to conic, smooth, epaleate. Ray florets 15-25, pistillate, fertile; corollas lavender-tinged abaxially, white adaxially, and often drying with a bluish purple midstripe. Disc florets (20-) 45-75, bisexual, fertile; corollas yellow, abruptly contracted, tubes shorter than narrowly tubular throats, lobes 5, erect, triangular; style-branch appendages lanceolate-acute. Cypselae (brownish) obovoid to widely ellipsoid, strongly compressed, margins pale, winglike, piloso-ciliate, body faces sparsely pilose (hairs apically glochidiate), wings glabrous; pappi of 2 ascending, thin, barbellate awns, usually plus elliptic ring of shorter awns. x = 3.[31] [more]

Dichrocephala

[more]

Dicoma

Dicoma is a genus of in the Asteraceae family. It contains the following species: [more]

Dicranocarpus

Annuals, 10-70 cm (± succulent; taprooted). Stems 1, erect, branched dichotomously, divaricate (drying brittle). Leaves mostly cauline; opposite; obscurely petiolate; blades 1(-2) -pedately or -pinnately lobed (lobes filiform), ultimate margins entire, faces glabrous. Heads radiate, borne singly or (2-4) in cymiform arrays. Calyculi of (0-) 1-3+ erect, linear to subulate, herbaceous bractlets. Involucres cylindric to obconic, 1.5-3 mm diam. (larger in fruit). Phyllaries persistent, 3-6 in 1(-2) series, lance-ovate to lanceolate, scarious, brown-nerved. Receptacles slightly convex, paleate; paleae linear to subulate, scarious. Ray florets 3-6, pistillate, fertile; corollas yellow. Disc florets 3-4+, functionally staminate; corollas yellow, tubes shorter than throats, lobes 5, triangular. Cypselae obcompressed, oblong to linear, ± ribbed, smooth or tuberculate, glabrous or densely papillate; pappi persistent, of 2 spreading to recurved, smooth or proximally papillate awns. x = 10.[32] [more]

Dimeresia

Dimeresia is a monotypic genus in the sunflower family containing the single species Dimeresia howellii, which is known by the common name doublet. The doublet is a very tiny annual flowering plant rarely exceeding 4 centimeters in height or width. It forms a small tuft on the ground with several oval-shaped leaves and an inflorescence of tiny white to purple bell-shaped flowers each a few millimeters long. This uncommon plant is found in one region in the western United States where northeastern California meets Oregon and Nevada at the Modoc Plateau. [more]

Dimorphotheca

Annuals [perennials, subshrubs, shrubs], 5-40[150+] cm. Stems procumbent to erect [prostrate], glabrous or arachnose to piloso-hirtellous and/or stipitate-glandular. Leaves ± sessile or petiolate; blades oblong or oblanceolate to linear, margins entire or dentate [pinnately lobed], faces sparsely arachnose and/or stipitate-glandular. Heads borne singly. Involucres campanulate to hemispheric or broader, 5-20+ mm diam. Phyllaries 15-21 in 2(-3) series, lanceolate to lance-linear. Receptacles flat to conic. Ray florets 10-21+ in ± 1 series; corollas usually yellow to orange or white, sometimes purplish abaxially and/or at bases or apices, laminae oblong-elliptic to oblanceolate. Disc florets 15-50+, bisexual, all or mostly fertile (inner sometimes functionally staminate) ; corollas whitish or yellow, red, or purplish, tubes much shorter than ± campanulate throats (lobes sometimes with terete or dilated appendages). Cypselae (ray) triquetrous-prismatic to clavate, ± tuberculate or ridged; (disc) compressed, often winged, ± smooth. x = 9.[33] [more]

Diplostephium

Diplostephium is a genus of trees and shrubs, that has ca. 110 species (Ulloa & Jørgensen, 2004). It is distributed on high mountains zones from Venezuela to Chile with the exception of two species in Costa Rica (INBio information system, July 2005) and twelve in the "Sierra Nevada de Santa Marta" (Colombia). It makes part of the high andean forest and the paramo ecosystems. Colombia has the most species with 63, the mayority of them found in the Oriental Cordillera, which has 33 registered species until this moment. Diplostephium is the third most diverse genus on the paramos with 70 species after Pentacalia and Senecio (Luteyn, 1999). [more]

Distephanus

Distephanus is a genus of in the Asteraceae family. It contains the following species: [more]

Dittrichia

Annuals [perennials], mostly 20-130 cm (glandular, viscid). Leaves mostly cauline (at flowering), alternate; sessile; blade margins entire or dentate [serrate]. Heads radiate, in racemiform or paniculiform arrays. Involucres ± campanulate, 3-8[-10+] mm diam. Phyllaries persistent (spreading to reflexed in fruit), in 3-4 series, unequal. Receptacles flat, smooth or alveolate, epaleate. Ray florets (6-) 10-12(-16), pistillate, fertile; corollas yellow, aging reddish, laminae 2-7 mm. Disc florets 8-20+; corollas yellow, aging reddish, lobes 4-5. Cypselae ellipsoid to terete (abruptly constricted distally; usually glandular distally) ; pappi persistent (fragile), of basally connate, barbellate bristles in 1 series. x = 9, 10.[34] [more]

Doellingeria

Perennials, 40-200 cm (rhizomatous or with short woody crowns) . Stems erect, simple, glabrous or sparsely strigose, eglandular. Leaves basal and cauline; alternate; sessile; basal withering, oblanceolate; proximal cauline sometimes withering, reduced; mid cauline blades (1-nerved, venation brochidodromous) lanceolate to elliptic (little reduced distally, much reduced in arrays), margins entire, faces glabrate to moderately short-woolly or strigose. Heads radiate, (3-300) in flat-topped corymbiform arrays. Involucres cylindro-campanulate (3-6.8 ×) 1.8-4.6 mm. Phyllaries 16-40 in 3-5 series (erect), 1-nerved, (midnerves raised, sometimes brownish and translucent, not keeled), lanceolate to deltate, unequal, pliable to rigid, margins narrowly scarious, dark green zone restricted to narrow bands along midnerves, apices rounded, glabrate to moderately strigose, sometimes strigose distally. Receptacles slightly convex, pitted, epaleate. Ray florets 2-10(-16), pistillate, fertile; corollas white. Disc florets 4-25(-50), bisexual, fertile; corollas pale yellow, ampliate, tubes shorter than throats, lobes 5, often spreading to reflexed, deltate (2-4.2 mm) ; style-branch appendages narrowly lanceolate (papillate on at least distal 1 / 2 ). Cypselae terete to narrowly obconic, sometimes somewhat compressed (bases distinctly stipitate), 4-10-ribbed (ribs darkened, translucent, sometimes resinous), glabrous, eglandular, sometimes resinous; pappi persistent in 4 series, whitish outer of linear to subulate, short (5-15 % length inner) scales, 3 inner of 60-90 white to tan, barbellate bristles, outer apically attenuate, innermost clavate. x = 9.[35] [more]

Doronicum

Doronicum is a genus of the botanical family Asteraceae. [more]

Dubautia

Dubautia is a genus of flowering plant in the sunflower family, Asteraceae, that is endemic to Hawaii. It contains more species than the other two genera in the silversword alliance, including cushion plants, shrubs, trees, and lianas. [more]

Dubyaea

[more]

Duhaldea

Dysodiopsis

Annuals or perennials, 40-80+ cm. Stems erect, distally branched. Leaves cauline; mostly opposite (distal alternate) ; blades linear, margins coarsely toothed, faces glabrous (bases ± setaceous, oil-glands scattered along midveins). Heads radiate, in loose, corymbiform arrays or borne singly. Calyculi of 5-8 subulate or pinnatisect bractlets (bearing oil-glands). Involucres ± campanulate, 5-8 mm diam. Phyllaries persistent, 10-12 in 2 series (strongly connate, oblong to linear, margins of outer free to bases, faces of all or outer bearing submarginal and subapical oil-glands). Receptacles convex, pitted (socket margins fimbrillate), epaleate. Ray florets 7-12, pistillate, fertile; corollas lemon to greenish yellow. Disc florets 20-40+, bisexual, fertile; corollas dull yellow, tubes shorter than cylindro-funnelform throats, lobes 5, deltate. Cypselae obpyramidal, glabrous or sparsely strigillose; pappi persistent, of 10-12, 1(-3) -aristate scales in ± 2 series. x = 13.[36] [more]

Dyssodia

Annuals [perennials], 10-30(-70+) cm. Stems erect to decumbent, branched from bases or throughout. Leaves cauline; mostly opposite (distal sometimes alternate) ; blades (1-) 2-3-pinnatisect, primary lobes linear to linear-cuneate, ultimate margins entire or toothed, faces puberulent (little, if at all, setaceous at bases, on teeth, or at tips of lobes, oil-glands submarginal). Heads radiate, borne singly or in 2s or 3s [pseudocephalia]. Calyculi of [0] 1-9 ± linear bractlets (lengths 1/2-1 phyllaries, bearing oil-glands). Involucres turbinate to campanulate [hemispheric], 5-10 mm diam. Phyllaries persistent, 6-12 in ± 2 series (distinct to bases or nearly so, oval-oblanceolate, each bearing 1-7 round to elliptic oil-glands). Receptacles convex, ± pitted (socket margins fimbrillate to setose), epaleate. Ray florets usually 5-8, pistillate, fertile; corollas yellow-orange. Disc florets 12-50[-100+], bisexual, fertile; corollas yellow to orange, tubes shorter than cylindric throats, lobes 5, deltate to lance-deltate. Cypselae obpyramidal to obconic, subsericeous or glabrescent; pappi persistent, of 15-20 scales in ± 2 series (each scale comprising 5-10 basally connate, unequal bristles). x = 13.[37] [more]

Eastwoodia

The monotypic plant genus Eastwoodia contains the single species Eastwoodia elegans, a flower known by the common name yellow mock aster or yellow aster. It is endemic to California. It is a shrub which sends up several erect stems, each bearing a rounded, bright yellow flower. The stems have a shreddy bark and small leaves. This plant is found only on the grasslands and hillsides of central California, from the Bay Area south to the Tehachapis. [more]

Eatonella

Annuals, 1-3(-5+) cm. Stems decumbent to erect, often branched from bases (woolly). Leaves basal (mostly) and cauline; opposite (proximal) or alternate (mostly) ; petiolate or sessile; blades spatulate to oblanceolate, margins entire, faces woolly-tomentose. Heads radiate, borne singly. Involucres campanulate, 3-5 mm diam. Phyllaries persistent, 8-13 in (1-) 2 series (reflexed in fruit, distinct, linear to oblong, herbaceous, ± conduplicate, woolly). Receptacles flat or convex, pitted or smooth, glabrous, epaleate. Ray florets 8-13, pistillate, fertile; corollas yellowish or purplish. Disc florets 7-12+, bisexual, fertile; corollas yellowish, tubes shorter than or about equaling campanulate throats, lobes 4-5, ± deltate. Cypselae compressed, linear-oblanceolate, (callous-margined) ciliate; pappi persistent, of 2 ± laciniate to nearly entire, often uniaristate scales. x = 19.[38] [more]

Echinacea

Echinacea () is a genus of herbaceous flowering plants in the daisy family, Asteraceae. The nine species it contains are commonly called purple coneflowers. They are endemic to eastern and central North America, where they are found growing in moist to dry prairies and open wooded areas. They have large, showy heads of composite flowers, blooming from early to late summer. The generic name is derived from the Greek word ?????? (echino), meaning "sea urchin," due to the spiny central disk. Some species are used in herbal medicines and some are cultivated in gardens for their showy flowers. A few species are of conservation concern.[citation needed] [more]

Echinops

Echinops is a genus of about 120 species of thistles in the daisy family Asteraceae, commonly known as globe thistles. They are native to Europe east to central Asia and south to the mountains of tropical Africa. [more]

Eclipta

Annuals or perennials, 10-50(-70+) cm. Stems erect or decumbent, branched from bases and/or distally (sometimes rooting at proximal nodes). Leaves cauline; opposite; petiolate or sessile; blades (1- or 3-nerved) lanceolate to lance-linear, bases cuneate, margins serrate to subentire, faces sparsely scabrellous. Heads radiate, in loose, corymbiform arrays or borne singly. Involucres hemispheric, 3-5 mm diam. Phyllaries persistent, 8-12+ in 2-3 series (lanceolate to linear, subequal, thin-herbaceous, spreading in fruit). Receptacles flat to convex, paleate (paleae linear to filiform, not conduplicate, falling with fruits). Ray florets 20-40 (in 2-3+ series), pistillate, fertile; corollas white or whitish. Disc florets 15-30+, bisexual, fertile; corollas white or whitish, tubes much shorter than ampliate, cylindric throats, lobes 4-5, ± deltate. Cypselae obcompressed, weakly 3-4-angled (not winged, epidermes usually corky and rugose to tuberculate) ; pappi persistent, coroniform (sometimes with 2 teeth). x = 11.[39] [more]

Egletes

Egletes is a genus of flowering plant in the Asteraceae family. It contains the following species: [more]

Ekmania

[more]

Elaphandra

Elaphandra is a genus of in the Asteraceae family. It contains the following species: [more]

Elephantopus

Perennials, (1-) 2-8(-12+) dm; often rhizomatous or stoloniferous. Leaves mostly basal or mostly cauline at flowering; sessile or petiolate, petioles ± winged (often clasping at bases) ; blades mostly elliptic, ovate, or obovate to lanceolate, oblanceolate, or spatulate (rarely orbiculate), bases ± cuneate, margins usually toothed (rarely entire), apices obtuse to acute, abaxial or both faces usually resin-gland-dotted. Heads ± discoid, sessile, not individually bracteate, in clusters of (1-) 10-40+ in corymbiform-paniculiform arrays 6-15(-25) cm diam. (each cluster subtended by 2-3 ± deltate bracts). Involucres ± cylindric, 1-3+ mm diam. Phyllaries 8 in 4 decussate pairs, the outer 4 ovate, inner 4 lanceolate, all ± chartaceous, margins entire, tips ± spinose to apiculate, abaxial faces of inner 4 usually dotted distally with resin glands. Florets (1-) 4(-5+) ; corollas white or pink to purple, tubes longer than abruptly funnelform throats, lobes 5, lance-linear, unequal (abaxial sinus deepest). Cypselae ± clavate, sometimes ± flattened, 10-nerved or -ribbed, strigillose to hirsutulous; pappi persistent, of 5(-6), 1-aristate scales (look closely for squamiform, gradually to abruptly tapering base of each arista). x = 11.[40] [more]

Eleutheranthera

[more]

Elytropappus

[more]

Emilia

Emilia may refer to any of the following: [more]

Encelia

Encelia is a genus of the plant family Asteraceae. It consists of shrubs (and one geophyte) of arid environments in southwestern North America and western South America. All have n = 18 chromosomes. With the exception of the South American species, all are obligate outcrossers. In cultivation, the species readily form fertile F1 hybrids, F2s, and backcrosses, but in natural areas of sympatry, F2s and backcrosses are absent or rare. [more]

Enceliopsis

Perennials 15-100+ cm (caudices or taproots woody). Stems erect, branched from bases. Leaves basal; alternate; petiolate or sessile; blades 3-nerved, elliptic, ovate, rhombic, or suborbiculate, bases ± cuneate to nearly truncate, margins entire (sometimes corrugate or ruffled), faces densely puberulent or silky-velutinous. Heads radiate, borne singly (peduncles much longer than involucres). Involucres ± hemispheric or broader, 10-30+ mm diam. Phyllaries persistent, 30-65+ in 3-6 series. Receptacles convex, paleate (paleae ± conduplicate, folded around and falling with cypselae). Ray florets (11-) 20-35+, neuter; corollas yellow. Disc florets (50-) 200-500+, bisexual, fertile; corollas yellow, tubes shorter than to equaling abruptly expanded throats, lobes 5, triangular. Cypselae strongly compressed or flattened, ± cuneate (margins ± white, corky, usually ciliate, faces black, glabrous or ± silky-villous) ; pappi 0, or persistent, of 2 awns (often with 2-10+, often connate, minute scales or teeth as well). x = 18.[41] [more]

Engleria

Enydra

[more]

Epaltes

[more]

Epilasia

[more]

Erato

A genus in the Kingdom Animalia. [more]

Erechtites

Annuals or perennials (often with rank, pungent odor), mostly 20-200 cm (taprooted; glabrous or ± tomentose or villous, often unevenly glabrescent). Stems usually 1, usually erect. Leaves basal and cauline; alternate; petiolate or sessile; blades pinnately nerved, mostly ovate to lanceolate (sometimes pinnately lobed or dissected), ultimate margins entire, denticulate, or toothed, faces glabrous or ± tomentose or villous (often unevenly glabrescent). Heads disciform, in cymiform or corymbiform arrays. Calyculi of 1-6[-12+] bractlets. Involucres urceolate or cylindric to turbinate, 2-10+ mm diam. Phyllaries persistent, usually (5), 8, 13, or 21 in 1-2 series, erect (sometimes reflexed in fruit), distinct (margins ± interlocking), lanceolate to linear, equal, margins ± scarious (tips green or with minute dark spots). Receptacles flat to convex, ± foveolate or smooth, epaleate. Ray florets 0. Peripheral (pistillate) florets 10-100+ (in 1-3+ series), corollas whitish to pale yellow, tubular-filiform, lobes 4-5, deltate, erect. Disc florets (3-) 10-20(-50+), mostly bisexual and fertile, inner sometimes functionally staminate; corollas whitish to pale yellow [pinkish], tubes longer than funnelform throats, lobes 4-5, erect to spreading, lance-ovate; style branches stigmatic in 2 lines, apices truncate-penicillate. Cypselae (stramineous to brown or purple) ± prismatic and 5-angled or -ribbed or ± obovoid to ± fusiform and 10-20-nerved, glabrous or puberulent (on or between ribs or nerves) ; pappi readily falling, of 60-120, white [reddish], barbellulate bristles. x = 20.[42] [more]

Eremanthus

Eremanthus Less is a genus of plants belonging to the Asteraceae family with 22 recorded species. All plants are native of Cerrado in Brazil. [more]

Eremothamnus

Eremothamnus is a genus of in the Asteraceae family. It contains the following species: [more]

Ericameria

Ericameria is a genus of shrubs in the Asteraceae or daisy family known by the common names rabbitbrush, rabbitbush, and goldenbush. These are semi-deciduous shrubs familiarly known as to sagebrush. They are distributed in the arid western United States and northern Mexico. Bright yellow flowers adorn the plants in late summer. Ericameria nauseosa, a synonym of Chrysothamnus nauseosus, is known for its production of latex. [more]

Ericentrodea

Ericentrodea is a genus of in the Asteraceae family. It contains the following species: [more]

Erigeron

Erigeron (; syn. Stenactis Cass.) is a genus of about 390 species of flowering plants in the family Asteraceae. The genus has a cosmopolitan distribution with the highest species diversity in North America, where 173 species occur. [more]

Eriocephalus

Eriocephalus is a genus of in the Asteraceae family. It contains the following species: [more]

Eriophyllum

Eriophyllum, commonly known as the woolly sunflower, is a genus of annual or herbaceous perennial plant native to western North America, with a concentration of narrow endemics in the California Floristic Province. [more]

Erythrocephalum

Espeletia

Espeletia, commonly known as Frailej?n or Fraylej?n is a genus of perennial subshrubs, in the family Asteraceae. The genus, which is endemic mainly to Colombia, Venezuela and Ecuador, was first formally described by botanist Alexander Von Humboldt in 1801. The genus was named after the New Granada viceroy Jos? Manuel de Ezpeleta. [more]

Ethulia

[more]

Eucephalus

Eucephalus may refer to: [more]

Euchiton

Annuals or perennials, 5-80 cm (usually fibrous-rooted, sometimes rhizomatous, usually stoloniferous). Stems usually 1, erect. Leaves basal and cauline (sometimes in rosettes) ; alternate; petiolate or sessile; blades oblanceolate, spatulate, lanceolate, or linear, bases cuneate or ampliate, margins entire (sometimes undulate and/or revolute), faces bicolor, abaxial usually silvery, tomentose, adaxial usually green, glabrate or glabrous. Heads disciform, usually in terminal clusters (subtended by leafy bracts, sometimes with axillary clusters), rarely borne singly. Involucres narrowly campanulate to cylindric, 3-5 mm. Phyllaries in 3-4+ series, mostly stramineous to brownish, sometimes purplish to pinkish (hyaline, stereomes not glandular), unequal, chartaceous toward tips. Receptacles flat, smooth, epaleate. Peripheral (pistillate) florets 16-150 (more numerous than bisexual) ; corollas purple or distally purplish. Inner (bisexual) florets 1-7; corollas purple or distally purplish. Cypselae obovoid-ellipsoid, slightly flattened, faces minutely hairy or papillate (papilliform hairs or papillae ± clavate, not myxogenic) ; pappi readily falling (singly or in groups), of 12-20, distinct or basally coherent, barbellate bristles in 1 series. x = 14.[43] [more]

Eupatorium

Eupatorium is a genus of flowering plants in the aster family, Asteraceae, containing from 36 to 60 species depending on the classification system. Most are herbaceous perennial plants growing to 0.5?3 m tall. A few are shrubs. The genus is native to temperate regions of the Northern Hemisphere. Most are commonly called bonesets, thoroughworts or snakeroots. The genus is named for Mithridates Eupator, king of Pontus. [more]

Eurybia

Perennials, 10-120 cm (rhizomes long and slender to short and thick, sometimes cormoid, often becoming woody). Stems ascending to erect, usually simple, rarely branched proximally, glabrous or ± densely hairy, usually eglandular, sometimes stipitate-glandular. Leaves basal and cauline; alternate; sessile or petiolate; blades cordate, ovate, obovate, elliptic, or oblong to spatulate, oblanceolate, or lanceolate, usually gradually reduced distally, margins entire or serrate, sometimes spinulose-serrate, faces glabrate to hairy, usually eglandular, sometimes stipitate-glandular. Heads radiate, usually in corymbiform arrays, rarely borne singly. Involucres cylindro-campanulate to broadly campanulate, (414(16) ×) 425+ mm. Phyllaries 20-140 in 37 series, 1-nerved (usually rounded adaxially, sometimes low-keeled), broadly ovate or oblong to oblanceolate, lanceolate, or linear, unequal, bases indurate (rarely wholly foliaceous), margins narrowly scarious (seldom herbaceous), often ciliolate (green zones ± basally truncate, in distal 1 / 3-3 / 4 of phyllary (outer) to less than 1 / 6 and only along midnerves (inner), apices obtuse to acute, faces glabrous, ± strigillose, puberulent, scabrellous, strigoso-villous, or villous, sometimes ± stipitate-glandular. Receptacles flat to slightly convex, pitted, epaleate. Ray florets 560, pistillate, fertile; corollas white to purple (coiling at maturity). Disc florets 8260, bisexual, fertile; corollas yellow, becoming purple at maturity, barely to abruptly ampliate, tubes shorter to longer than funnelform to campanulate throats, lobes 5, usually erect to spreading, sometimes ± reflexed, deltate, triangular, or lanceolate; style-branch appendages lanceolate. Cypselae cylindro-obconic to fusiform, ± compressed, 712(18) -nerved, faces glabrous or sparsely to densely strigillose, eglandular; pappi persistent, of 3570+, reddish, orange, cinnamon, tawny, tan, yellowish, or pinkish, unequal, soft to stiff, barbellate or barbellulate, often apically ± clavate bristles in 24 series. x = 9.[44] [more]

Euryops

Euryops is a genus of in the Asteraceae family. It contains the following species: [more]

Euthamia

Euthamia is a genus of flowering plants in the Asteraceae, commonly referred to as Goldentop. The species were formerly classed with Solidago, the goldenrods. [more]

Eutrochium

Eutrochium is a genus of herbaceous flowering plants in Asteraceae. They are commonly referred to as Joe-Pye weeds. They are native to Eastern North America and have non-dissected foliage and pigmented flowers. It includes all the purple flowering North American species of the genus Eupatorium as traditionally defined. Eupatorium has recently undergone some revision and has been broken up into smaller genera. Eutrochium is the senior synonym of Eupatoriadelphus. Eupatorium in the revised sense (about 42 species of white-flowered plants from the temperate Northern hemisphere) is apparently a close relative of Eutrochium. Another difference between Eutrochium and Eupatorium is that the former has mostly leaves and the latter mostly opposite ones. Eupatorium and Eutrochium are both placed in the subtribe Eupatoriinae, but South American plants which have sometimes been placed in that subtribe, such as Stomatanthes, seem to belong elsewhere in the tribe Eupatorieae.
[more]

Evax

[more]

Facelis

Annuals, 3-30 cm (taprooted or fibrous-rooted, not stoloniferous). Stems usually 1, erect to decumbent. Leaves cauline; alternate; sessile; blades spatulate or oblanceolate to lance-linear, bases ± cuneate, margins entire (usually revolute), faces bicolor, abaxial gray, tomentose, adaxial green, glabrous. Heads disciform, usually in ± capitate to loose, spiciform arrays, rarely borne singly (in leaf axils). Involucres narrowly ovoid or nearly cylindric [campanulate or broadly turbinate], 8-11 mm. Phyllaries in 3-5+ series, usually greenish to stramineous, sometimes purplish (hyaline, stereomes not glandular), unequal, chartaceous toward tips. Receptacles flat, smooth, epaleate. Peripheral (pistillate) florets 10-25 (more numerous than bisexual) ; corollas whitish to purplish. Inner (bisexual) florets 3-5; corollas white to purplish. Cypselae obovoid, ± compressed (2-3-nerved), faces silvery sericeous (hairs not myxogenic) ; pappi persistent, of 20-30+, distinct or basally connate, ± plumose bristles in 1 series. x = 14.[45] [more]

Farfugium

[more]

Faujasiopsis

Faujasiopsis is a genus of about three species of flowering plants in the Asteraceae family. It contains the following species: [more]

Felicia

The name Felicia (a Latin female version of "Felix", meaning happiness) is associated with saints, poets, astronomical objects, plant genera, fictional characters, and animals, especially cats. [more]

Femeniasia

Filaginella

[more]

Filago

Annuals, (1-) 5-40 cm. Stems [0] 1, ± erect, or 2-7[-10+], ± ascending [prostrate]. Leaves cauline [basal]; alternate; blades lanceolate to oblanceolate [spatulate or ± round]. Heads in (dense, spheric [hemispheric]) glomerules of [2-]8-35+ in ± dichasiiform arrays [borne singly]. Involucres 0 or inconspicuous. Phyllaries usually 0, rarely 1-4, unequal (similar to paleae). Receptacles cylindric to clavate (heights [2-]5-15 times diams.), glabrous. Pistillate paleae (except usually innermost) ± persistent [falling], ± erect to ascending; bodies with 5+ nerves (nerves ± parallel, obscure), lanceolate to ovate, open to ± folded (each at most enfolding, not enclosing a floret) ; wings erect to recurved (apices acuminate to aristate). Innermost paleae usually all pistillate, in some species bisexual and pistillate, persistent or tardily falling, usually 5, erect to ascending [spreading] (scarcely enlarged) in fruit, shorter than other pistillate paleae; bodies lanceolate to ovate. Pistillate florets [12-]27-40+. Functionally staminate florets 0. Bisexual florets (1-) 2-9(-11) ; corolla lobes 4, ± equal. Cypselae brown, ± monomorphic: terete to ± compressed, cylindric to ± obovoid, usually straight, not gibbous, faces papillate to muricate [glabrous, smooth], dull; corolla scars apical [subapical]; pappi: outer pistillate 0, inner pistillate and bisexual of [3-]13-21 bristles (visible in heads). x = 14.[46] [more]

Fitchia

Fitchia is a genus of in the Asteraceae family. It contains the following species: [more]

Flaveria

Annuals, perennials, or subshrubs, to 200+ cm [trees to 400 cm] (usually ± succulent, herbage usually glaucous). Stems (often purplish) erect or decumbent, branched distally or ± throughout. Leaves cauline; opposite (decussate) ; petiolate or sessile (weakly connate to connate-perfoliate) ; blades (often 3-nerved) oblong-ovate to lanceolate or linear, margins entire, serrate, or spinulose-serrate, faces glabrous or short-pubescent. Heads radiate or discoid, usually in tight or loose aggregations in (often flat-topped) ± corymbiform arrays or glomerules. Involucres oblong, urceolate, cylindric, or turbinate, 0.5-2 mm diam. Phyllaries persistent, 2-6(-9) in ± 1 series (linear, concave, or boat-shaped, subequal). Receptacles convex, epaleate ("receptacles" of glomerules sometimes setose). Ray florets 0-1(-2), pistillate, fertile; corollas yellow or whitish (laminae inconspicuous). Disc florets 1-15, bisexual, fertile; corollas yellow, tubes shorter than to about equaling funnelform to campanulate throats, lobes 5, ± deltate. Cypselae (black) weakly compressed, narrowly oblanceolate or linear-oblong (usually 10-nerved, glabrous) ; pappi usually 0, sometimes persistent, of 2-4 hyaline scales, or coroniform (of connate scales). x = 18.[47] [more]

Fleischmannia

Fleischmannia is a genus of flowering plant in the Asteraceae family. It contains the following species: [more]

Florestina

Annuals [perennials], 10-60 cm. Stems erect, branched (mostly distally). Leaves cauline; opposite (proximal) or alternate (mostly) ; mostly petiolate; blades (3- or 5-nerved) simple (proximal and distal) or (mid-cauline) 3- or 5-lobed or -foliolate; blades or leaflets broadly to narrowly oblong to ovate, ultimate margins entire, faces sparsely to moderately scabrous (hairs white, antrorse, 0.3-0.7 mm), usually gland-dotted as well. Heads discoid, in ± corymbiform to paniculiform arrays. Involucres obconic to subhemispheric, 3-6+ mm diam. Phyllaries falling, 4-14 in 1-2 series (obovate to oblanceolate, subequal, thin-herbaceous, margins scarious, sometimes purplish). Receptacles concave to convex, knobby or smooth (sometimes minutely setose or hairy), epaleate. Ray florets 0. Disc florets 10-30+, bisexual, fertile; corollas whitish, sparsely glandular-hairy, tubes longer than funnelform throats, lobes 5, lance-linear (often unequal). Cypselae obpyramidal, 4-angled, faces sometimes ribbed, sparsely hairy (hairs curled) ; pappi persistent, of 8-12 (distinct) spatulate to lanceolate [suborbiculate], medially thickened, laterally scarious scales in 1 series (some, all, or the alternate aristate). x = 12.[48] [more]

Floscaldasia

Floscaldasia is a genus of flowering plant in the Asteraceae family. It contains two species found in tropical South America: [more]

Flourensia

Subshrubs or shrubs [trees], to 100(-200) [-500+] cm. Stems erect, branched from bases or ± throughout. Leaves cauline; alternate; petiolate [nearly sessile]; blades pinnately nerved, mostly elliptic to lance-oblong or ovate, bases rounded to cuneate, margins entire [toothed], faces glabrous or ± scabrellous, usually gland-dotted and vernicose. Heads discoid or radiate, borne ± singly or in ± spiciform arrays. Involucres campanulate to hemispheric, 4-20 mm diam. Phyllaries persistent, 12-40 in 2-4+ series (subequal or unequal, outer longer). Receptacles flat to conic-ovoid, paleate (paleae conduplicate, cartilaginous to scarious). Ray florets 0 or [5-]13-21, either neuter, or styliferous and sterile; corollas yellow. Disc florets 10-50[-150], bisexual, fertile; corollas yellow, tubes much shorter than cylindric-funnelform throats, lobes 5, ± deltate. Cypselae ± compressed or flattened [subterete], oblong to oblanceolate (not winged, ± sericeous) ; pappi persistent or tardily falling, of 2 subulate scales. x = 9.[49] [more]

Flyriella

Perennials, 20-60[-200] cm (plants ± viscid). Stems erect, simple or branched from bases or ± throughout. Leaves cauline; mostly opposite (distal sometimes alternate) ; petiolate; blades usually 3-nerved from bases, deltate to ovate, margins dentate to serrate, faces usually hirsute and/or stipitate-glandular. Heads discoid, in paniculiform to corymbiform arrays. Involucres ± cylindric [campanulate or hemispheric], 4-5+ mm diam. Phyllaries persistent, 24-30+ in 3-5+ series, 3-5-nerved, ovate to lance-linear, unequal (herbaceous to chartaceous). Receptacles flat, epaleate. Florets 10-30[-75]; corollas white to ochroleucous, throats ± cylindric (± contracted distally, lengths 4-6 times diams.), lobes 5, oblong-ovate; styles: bases enlarged, hirsute, branches narrowly clavate (distally dilated). Cypselae prismatic, 4-5-ribbed, sparsely scabrellous (at least distally), not gland-dotted; pappi persistent, of 20-40 smooth to barbellate bristles in 1 series. x = 10.[50] [more]

Gaillardia

Gaillardia (), the blanket flowers, is a genus of drought-tolerant annual and perennial plants from the sunflower family (Asteraceae), native to North and South America. It was named after M. Gaillard de Charentonneau, an 18th-century French magistrate who was a patron of botany. The common name refers to the inflorescence's resemblance to brightly patterned blankets made by native Americans. [more]

Galactites

[more]

Galactitis

Galinsoga

Galinsoga is a genus of flowering plants in the family Asteraceae. Members include Galinsoga parviflora, , and Galinsoga quadriradiata. [more]

Galisonga

[more]

Gamochaeta

The Antarctic Cudweed (Gamochaeta antarctica) is a species of flowering plant in the Asteraceae family. It is monotypic within the genus Gamochaeta. It is found only in Falkland Islands. Its natural habitat is temperate shrubland. It is threatened by habitat loss. [more]

Garberia

Shrubs, 100-250 cm (± evergreen). Stems erect (terete, striate when dry), branched (usually gland-dotted, farinaceous to puberulent when young). Leaves cauline; all or mostly alternate (at flowering) ; petiolate or subsessile; blades obscurely nerved, spatulate to spatulate-obovate or orbiculate-obovate, margins entire, faces gland-dotted (viscid, farinaceous when young). Heads discoid, in corymbiform or paniculiform arrays. Involucres narrowly cylindric, 3.5-5(-6) mm diam. Phyllaries persistent, (12-) 15-20 in 3-5 series, ± striate, lanceolate to linear-oblong, unequal (apices acute or acuminate, abaxial faces farinaceous, usually gland-dotted). Receptacles weakly convex, epaleate. Florets usually 5 (aromatic) ; corollas pink to purplish, throats ± campanulate, lobes 5, triangular to lance-ovate; styles: bases not enlarged, glabrous, branches filiform to linear-clavate (distally papillose). Cypselae prismatic, ca. 10-ribbed, densely scabrellous; pappi persistent, of ca. 60-70, barbellate bristles in 2-3 series (outer shorter than inner).[51] [more]

Garuleum

[more]

Gazania

Gazania () is a genus of flowering plants in the family Asteraceae, native to Southern Africa. It is often planted as drought-tolerant ground cover. [more]

Geigeria

[more]

Geraea

Annuals or perennials, 10-100 cm. Stems erect, branched (branches ascending). Leaves basal and cauline; alternate; sessile or petiolate; blades (3-nerved) elliptic, lanceolate, oblanceolate, oblong, or ovate, bases auriculate or tapering, margins entire or toothed, faces ± canescent or glandular-puberulent to stipitate-glandular. Heads radiate or discoid, borne singly or in open, paniculiform arrays (peduncles usually longer than involucres). Involucres hemispheric, 7-15 mm diam. Phyllaries persistent, 20-30+ in 2-3+ series (distinct, narrowly lanceolate to linear or narrowly lance-oblong to lance-ovate, subequal to unequal, outer shorter). Receptacles convex, paleate (paleae ± conduplicate, folded around and falling with cypselae). Ray florets 0 or 10-21, neuter; corollas yellow. Disc florets 60-200+, bisexual, fertile; corollas yellow, tubes shorter than gradually to abruptly expanded throats, lobes 5, triangular. Cypselae (black) strongly compressed, narrowly cuneate (margins ± white, long-ciliate, faces ± hairy) ; pappi persistent, of 2 awns or subulate scales. x = 18.[52] [more]

Gerbera

Gerbera ( or {{IPAc-en|'|g|?r|b|?r|?} L. is a genus of ornamental plants from the sunflower family (Asteraceae). It was named in honour of the German botanist and naturalist Traugott Gerber (? 1743) who travelled extensively in Russia and was a friend of Carolus Linnaeus. [more]

Gibbaria

Glyptopleura

Glyptopleura is a monotypic genus in the daisy family containing the single species Glyptopleura marginata. The common names for this plant include carveseed, holy dandelion, keysia, and crustleaf. Some sources consider Glyptopleura setulosa to be a separate species, while others consider it to be a variant of G. marginata and the genus to be monotypic. This plant grows low to the ground from a flat basal rosette of distinctive lobed green leaves outlined in eye-catching hard white borders. The flesh is rich in milky sap. The flowers are ligulate, bearing long ray florets with toothed ends, which may be white, cream, or pale yellow. This species is native to the southwestern United States. [more]

Gnaphalium

Gnaphalium, commonly called Cudweed, is a genus of plants belonging to the family Asteraceae. There are about 120 members of the genus mostly found in temperate regions although some are found on tropical mountains or in the sub-tropical regions of the world. [more]

Gochnatia

[more]

Gorteria

[more]

Grangea

[more]

Grindelia

Grindelia is a genus of plants native to the Americas belonging to the family Asteraceae, (Compositae). G. squarrosa, a plant with bright yellow flowers indigenous to much of the United States, is commonly called curlycup gumweed. G. robusta, found in the western states, is a coastal scrub bush that is reputed to have several medicinal uses. Hairy gumweed, Grindelia cuneifolia, occurs in brackish coastal marshes of western North America, such as in some portions of the San Francisco Bay perimeter. [more]

Grosvenoria

Grosvenoria is a genus of about four species of shrubs and small trees in the Asteraceae family. They are native to the Andes, from central Ecuador to northern Peru at elevations of 2700 to 3700 meters. [more]

Guardiola

Perennials or subshrubs, (10-) 30-100 cm. Stems mostly erect, branched. Leaves cauline; opposite; ± petiolate; blades deltate or rounded-deltate to ovate [lanceolate to linear], margins usually dentate, faces glabrous or glabrate. Heads radiate, in corymbiform arrays [borne singly]. Involucres narrowly cylindric [campanulate], 2-3[-6] mm diam. Phyllaries persistent, 3-5 in 1 series (distinct, oblong or lanceolate to linear, herbaceous, conduplicate, streaked with 8-12+ translucent nerves, margins often membranous). Receptacles convex, paleate (paleae similar to phyllaries, membranous, each enfolding a floret). Ray florets 1-5, pistillate, fertile; corollas whitish (tubes often longer than laminae). Disc florets 3-20+, functionally staminate; corollas whitish, tubes longer than abruptly ampliate, campanulate to funnelform throats, lobes 5, lanceolate to lance-linear (filaments hairy; anthers green). Cypselae ± ellipsoid [fusiform to clavate], ± obcompressed, smooth or fine-ribbed, glabrous (bases carunculate) ; pappi 0 [5-6, erose scales]. x = 12.[53] [more]

Guevaria

Guevaria is a genus of flowering plant in the Asteraceae family. Places where it is found include Ecuador and Peru. [more]

Guizotia

Guizotia is a genus of six species of native African herbs. They are often known as sunflecks. The species G. abyssinica is occasionally found outside of cultivation in North America and Asia. [more]

Gundelia

The gundelia is a spiny, thistle-like flowering plant, any of several species of the genus Gundelia, in the sunflower family (Asteraceae), particularly G. tournefortii. It is found in the semi-desert areas of Syria, Israel, Jordan, Iraq, Iran, Azerbaijan, Armenia, and Anatolia. [more]

Gutierrezia

Gutierrezia is a genus of flowering plants in the sunflower family. Plants of this genus are known generally as snakeweeds or matchweeds. There are about 25 species found in North and South America. These plants contain chemical compounds which can be toxic to livestock and some are considered weeds. They bear small yellow daisylike flowers. [more]

Gymnarrhena

Gymnodiscus

Gynoxys

Gynoxys is a genus of in the Asteraceae family. It contains the following species: [more]

Gynura

Gynura is an Asian genus of the botanical family Asteraceae. [1], subfamily Asteroideae, tribe Senecioneae. The most known species is Gynura aurantiaca, so called because of the color of its orange inflorescences. This plant is also commonly know as "Purple Passion" because of the velvety purple leaves. Other species are [more]

Haplocarpha

[more]

Haploesthes

[more]

Haplopappus

Haplopappus is a genus of flowering plant in the Asteraceae family. Until the 1990s, Haplopappus was a wastebasket taxon for many species in the tribe Astereae, and most species have since been moved to other genera. [more]

Hartwrightia

Perennials, 60-120 cm (rhizomes thickened, fibrous-rooted). Stems erect, branched distally. Leaves basal and cauline; mostly alternate; petiolate or sessile; blades 1-nerved (or pinnately nerved), elliptic to linear [spatulate to oblanceolate], margins mostly entire, faces glabrous, gland-dotted. Heads discoid, in loose, corymbiform arrays. Involucres broadly obconic, 2-3 mm diam. Phyllaries persistent, 12-15 in 2-3 series, not notably nerved, oblong-elliptic to lanceolate, ± equal (herbaceous). Receptacles convex, usually partially paleate (paleae peripheral). Florets 7-10; corollas white or pinkish to bluish, throats campanulate (lengths ca. 1.5 times diams.), lobes 5, ± deltate; styles: bases not enlarged, glabrous, branches filiform to weakly clavate. Cypselae obpyramidal, 5-angled or -grooved, gland-dotted; pappi usually 0, rarely 1(-5+), fragile, flexuous, ± glandular setae. x = 10.[54] [more]

Hasteola

Perennials, (50-) 60-240 cm. Stems usually 1, erect (unbranched proximal to heads). Leaves basal and cauline; alternate; petiolate (proximal) or sessile; blades pinnately nerved, broadly deltate or hastate (proximal) to broadly lanceolate, margins doubly-serrate, faces glabrous. Heads discoid, in corymbiform (± flat-topped) arrays. Calyculi of 4-9+ (subulate, rarely leaflike) bractlets. Involucres cylindric or campanulate to obconic, 5-8+ mm diam. (glabrous). Phyllaries persistent, 7-14+ in 1-2 series, erect, distinct, oblong, ± equal, margins chartaceous to scarious. Receptacles slightly convex or flat, foveolate, epaleate. Ray florets 0. Disc florets 10-55, bisexual, fertile; corollas usually white or ochroleucous to greenish, rarely pinkish, tubes longer than cylindric throats, lobes 5, erect to spreading, lanceolate; style branches stigmatic in 2 lines, apices truncate or truncate-penicillate (appendages essentially 0). Cypselae cylindric-fusiform, 8-12-ribbed, glabrous; pappi persistent (fragile), of 100-150+, white, barbellulate bristles. x = 10.[55] [more]

Hazardia

Hazardia is a small genus of flowering plants in the daisy family. Plants in this genus may be called bristleweeds or goldenbushes. They are native to the western United States, especially California, and far northern Mexico. They are short, hardy perennials or small leafy shrubs. Some species have sharply toothed leaves. Generally they bear yellow flowers, with some having ray florets and appearing somewhat daisylike while others have only disc florets. The genus was named after the botanist Barclay Hazard. [more]

Hebeclinium

Hebeclinium is a genus of flowering plant in the Asteraceae family. Places where it is found include Costa Rica, Colombia, Ecuador, Peru, and Bolivia. [more]

Hecastocleis

Subshrubs or shrubs, 40-80(-150+) cm (usually with tufts of hairs in axils of leaves). Leaves cauline; sessile; blades linear, bases cuneate, margins entire or proximally spiny, faces tomentulose, glabrescent. Heads discoid, clustered in second-order heads (each cluster 15-25 mm diam. and subtended by ovate to orbiculate, prickly-margined bracts). Involucres (each enclosing 1 floret) cylindric to fusiform, 10 mm. Phyllaries in 2-3 series, ovate to lanceolate or linear, unequal, apices acute to cuspidate. Receptacles flat, smooth, glabrous, epaleate. Florets 1, bisexual, fertile; corollas reddish purple to greenish white, actinomorphic (lobes 5, lance-linear, glabrous) ; anther basal appendages slightly fimbriate, apical appendages lanceolate, acute; style branches relatively stout (0.1-0.5 mm), apices rounded (abaxial faces papillose to pilose). Cypselae ± terete (± 4 mm), not beaked, obscurely 4-5-nerved, faces glabrescent, not glandular-hairy; pappi of 6 unequal, lanceolate or multitoothed scales (sometimes ± coalescent and forming lacerate crowns). x = 8.[56] [more]

Hedypnosis

[more]

Helenium

Helenium is a genus of about 40 herbaceous flowering plants in the daisy family Asteraceae, native to North America and Central America. They bear yellow or orange daisy-like flowers. A number of these species (particularly Helenium autumnale) are commonly known as sneezeweed based on the former use of its dried leaves in making snuff, inhaled to cause sneezing that would supposedly rid the body of evil spirits. [more]

Helianthella

Helianthella is a genus of plants in the sunflower family. [more]

Helianthus

The Helianthus L. genus comprises 67 species and several subspecies in the Asteraceae family, all of which are native to North America, with some species (particularly Helianthus annuus (sunflower) and Helianthus tuberosus (Jerusalem artichoke)) cultivated in Europe and other parts of the world as food crops and ornamental plants. [more]

Helichryson

[more]

Helichrysum

The genus Helichrysum () consists of an estimated 600 species, in the sunflower family (Asteraceae). The type species is Helichrysum orientale. The name is derived from the Greek words helisso (to turn around) and chrysos (gold). [more]

Heliomeris

Annuals or perennials, (2-) 10-90(-120+) cm. Stems erect, branched distally or ± throughout. Leaves mostly cauline; opposite or alternate; sessile or subsessile; blades usually 1(-3) -nerved, elliptic, lance-linear, lanceolate, lance-ovate, linear, ovate, rhombic, or rhombic-ovate, margins entire (often revolute), faces hispid or strigose to stigillose, sometimes gland-dotted. Heads radiate, borne singly or in cymiform to paniculiform arrays. Involucres hemispheric or broader, 6-14 mm diam. Phyllaries persistent, 14-25 in ± 2-3 series (mostly lance-linear, herbaceous). Receptacles conic; paleate (paleae tan to brown, ovate to oblong-rectangular, conduplicate). Ray florets 5-15, neuter; corollas yellow (laminae elliptic, oblong, obovate, oval, or ovate). Disc florets 25-50+, bisexual, fertile; corollas yellow, tubes shorter than campanulate throats, lobes 5, triangular (style branches relatively slender, apices acute). Cypselae (black, mottled, or gray-striate) weakly 4-angled, ± obpyramidal (glabrous) ; pappi 0. x = 8.[57] [more]

Heliopsis

Heliopsis is a genus of herbaceous flowering plants in the daisy family Asteraceae. [more]

Helipterum

Helipterum is a genus of flowering plants in the family Asteraceae. Many of the species which were formerly included in this genus have now been transferred to other genera including: [more]

Helminthia

[more]

Helminthotheca

The genus Helminthotheca is an genus, which belongs to the family Asteraceae. Its members are often treated as species of other genera:[] [more]

Helmintia

Helogyne

[more]

Hemisteptia

[more]

Hemizonia

Hemizonia is a genus of plants in the daisy family (Asteraceae). They are known generally as tarweeds, although some tarweeds belong to other genera, such as Madia. Furthermore, Hemizonia is currently being revised; some species may be segregated into new genera. These tarweeds are native to southwestern North America, especially California. [more]

Heptanthus

[more]

Hesperevax

Annuals, 0.5-10(-20) cm. Stems 0, or 1, ± erect, or 2-10, ascending-erect to prostrate. Leaves basal or cauline; alternate (leaf or petiole bases yellowish, enlarged) ; blades oblanceolate to ± round. Heads usually in loose to dense glomerules of 2-40+ in cymiform or spiciform arrays, sometimes borne singly. Involucres 0. Phyllaries 0 or vestigial. Receptacles proximally conic, distally cylindric or slightly expanded (heights 0.8-1.3 or 4-6 times diams.), bristly (bristle lengths ± 1/2 palea lengths). Pistillate paleae persistent, erect to ascending or spreading; bodies with 5+ nerves (nerves ± parallel, obscure), obovate to oblanceolate, not gibbous, flat to concave or loosely folded most of lengths (almost closed near bases, not enclosing florets) ; wings 0. Staminate paleae persistent, usually 5, erect or distally spreading (and enlarged, thickened) in fruit, shorter than or surpassing pistillate paleae; bodies obovate (apices entire, blunt, adaxially green and lanuginose). Pistillate florets 3-25. Functionally staminate florets 2-6(-12) ; corolla (zygomorphic, ± gibbous) lobes (3-) 4(-5), unequal. Bisexual florets 0. Cypselae brown, proximally black-banded, monomorphic: obcompressed, obovoid (somewhat angular), slightly incurved, not gibbous, faces glabrous, smooth, dull to ± shiny; corolla scars apical; pappi 0.[58] [more]

Hesperomannia

Hesperomannia is a genus of in the Asteraceae family. It contains the following species: [more]

Heteracia

Heteranthemis

Annuals, 10-30(-100+) cm (plants sticky, viscid). Stems 1, erect, usually branched distally, hirtellous to pilosulous (hairs basifixed, some gland-tipped). Leaves mostly cauline; alternate; petiolate or sessile; blades obovate to oblong (bases sometimes ± clasping), often pinnately lobed, ultimate margins usually dentate, rarely entire, faces hirtellous to pilosulous (some hairs gland-tipped). Heads radiate, borne singly or in 2s or 3s. Involucres hemispheric or broader, 12-25+ mm diam. Phyllaries persistent, 20-30+ in 2-3+ series, distinct, ovate or obovate to lance-deltate or lanceolate (not keeled abaxially, usually each with central resin canal), unequal, margins and apices scarious (tips of inner usually dilated). Receptacles convex to conic, epaleate. Ray florets 13-21+, pistillate, fertile; corollas yellow, laminae ± linear. Disc florets 40-80(-100+), bisexual, fertile; corollas proximally ochroleucous, distally yellow, tubes cylindric (usually gland-dotted), throats funnelform, lobes 5, deltate. Cypselae dimorphic: outer 3-angled (each angle ± winged, wings ± spine-tipped) ; inner ± compressed (adaxial angles ± winged, wings ± spine-tipped) ; ribs 0, faces glabrous (peric) arps without myxogenic cells or resin sacs; embryo sac development tetrasporic) ; pappi 0. x = 9.[59] [more]

Heterosperma

Annuals, 10-40(-70+) cm (taprooted). Stems 1 (bases relatively thick), ascending to erect, branched distally or ± throughout (striate). Leaves mostly cauline; opposite; obscurely petiolate or sessile; blades mostly pinnately lobed [undivided] (lobes 3-5, usually linear to filiform, sometimes lanceolate), ultimate margins usually entire, sometimes denticulate (often ciliate, at least proximally, apices acute), faces glabrous [hairy]. Heads radiate, borne singly or in loose, cymiform arrays. Calyculi of (1-) 3-5+ erect, narrowly spatulate or linear to filiform, herbaceous bractlets (often surpassing phyllaries, margins usually hispid-ciliate). Involucres cylindric to obconic, 2-5 mm diam. (larger in fruit). Phyllaries 3-5+ in ± 2 series, distinct, erect, mostly oblong or ovate, equal, membranous. Receptacles concave to flat, paleate; paleae similar to phyllaries, oblong or oval to lanceolate or linear (± embracing cypselae, ± hyaline with brown striae, apices obtuse, apiculate). Ray florets 1-3[-8], pistillate, fertile; corollas pale yellow [orange]. Disc florets 3-10[-20+], bisexual, fertile; corollas ± yellow (at least distally), tubes shorter than funnelform throats, lobes 5, deltate. Cypselae (± dimorphic) outer obcompressed, ellipsoid or obovoid, winged (wings ± corky, often cucullate and/or pectinate), faces often corky-tuberculate, glabrous, inner ± obovoid, usually some (innermost) tapered to ± barbellate beaks; pappi 0, or persistent or tardily falling, of (1-) 2-3 spreading to reflexed, retrorsely barbellate awns. x = 25.[60] [more]

Heterotheca

A Golden aster, old genus Chrysopsis, and new Genus Heterotheca is a member of the Asteraceae family. This is a new world genus of the Asteraceae family. [more]

Hieracium

Hieracium (pronounced ), known by the common name hawkweed and classically as hierakion (from ancient Greek hierax 'hawk'), is a genus of the sunflower (Helianthus) family Asteraceae (previously called Compositae), and closely related to dandelion (Taraxacum), chicory (Cichorium), prickly lettuce (Lactuca) and sow thistle (Sonchus), which are part of the tribe Cichorieae. Hawkweeds, with their 10,000+ recorded species and subspecies, do their part to make Asteraceae the second largest family of flowers. Some botanists group all these species or subspecies into approximately 800 accepted species, while others prefer to accept several thousand species. Since most hawkweeds reproduce exclusively asexually by means of seeds that are genetically identical to their mother plant (apomixis or agamospermy), clones or populations that consist of genetically identical plants are formed and some botanists (especially in UK, Scandinavia and Russia) prefer to accept these clones as good species (arguing that it is impossible to know how these clones are interrelated) whereas others (mainly in Central Europe and USA) try to group them into a few hundred more broadly defined species. What is here treated as the single genus Hieracium is now treated by most European experts as two different genera, Hieracium and Pilosella, with species such as Hieracium pilosella, Hieracium floribundum and Hieracium aurantiacum referred to the latter genus. Many members of the genus Pilosella reproduce both by stolons (runners like those of strawberries) and by seeds, whereas true Hieracium species reproduce only by seeds. In Pilosella, many individual plants are capable of forming both normal sexual and asexual (apomictic) seeds, whereas individual plants of Hieracium only produce one kind of seeds. Another difference is that all species of Pilosella have leaves with smooth (entire) margins whereas most species of Hieracium have distinctly dentate to deeply cut or divided leaves. [more]

Hinterhubera

[more]

Hippia

[more]

Hirpicium

[more]

Hofmeisteria

[more]

Holocarpha

Annuals, 10-120 cm. Stems ± erect. Leaves mostly cauline (at flowering) ; proximal opposite (forming winter-spring rosettes, usually withering before flowering), mostly alternate; sessile; blades linear to oblanceolate, margins serrate to serrulate or entire, faces hirsute to strigose, sericeous, or villous (distal leaves sometimes stipitate-glandular and/or gland-dotted as well, apices of distal leaves usually each with pit-gland). Heads radiate, borne singly or in± corymbiform, paniculiform, racemiform, or spiciform arrays or in glomerules. Peduncular bracts: pit-glands 1 (terminal). Involucres ± obconic or campanulate to ± globose, 4-8+ mm diam. Phyllaries 3-16 in 1 series (elliptic, oblanceolate, or obovate, herbaceous, each usually 1/2 enveloping a subtended ray floret proximally, abaxially with pit-gland-tipped processes and glabrous or hispid, hispidulous, puberulent, and/or sessile- or stipitate-glandular). Receptacles flat to convex, glabrous, paleate (paleae subtending all or most disc florets). Ray florets 3-16, pistillate, fertile; corollas yellow (without purplish nerves, lobes 1/8-1/2 lengths of laminae, ± parallel). Disc florets 9-90, some bisexual and fertile, the rest functionally staminate; corollas yellow, tubes shorter than or about equaling funnelform throats, lobes 5, deltate (anthers yellow to brownish or reddish to dark purple; styles glabrous proximal to branches). Ray cypselae ± obcompressed (gibbous, basal attachments lateral, apices beaked, beaks adaxial, ascending, faces glabrous) ; pappi 0. Disc cypselae ± clavate (basal attachments central, apices beakless, faces glabrous) ; pappi 0. x = 6.[61] [more]

Homochroma

Homogyne

[more]

Hoplophyllum

[more]

Hulsea

Hulsea is a small genus of flowering plants in the daisy family known commonly as the alpinegold genus. Alpinegolds are annual or perennial herbs native to western North America. They produce stout erect stems which may be fuzzy, hairy, or quite woolly. They are leafy, especially toward the base of the stem. At the top of the stem they bear small daisylike flower heads, with ray florets in shades of yellow to reddish-orange around a center packed with disc florets. The fruits are generally hard and black with a pappus. [more]

Hydropectis

[more]

Hymenopappus

Biennials or perennials, to 120 cm. Stems erect, often scapiform (1 stem per crown in biennials, usually 3+ in perennials). Leaves mostly basal or basal and cauline; alternate; petiolate; blades usually 12+ times pinnately lobed (lobes usually ± filiform), ultimate margins usually entire, rarely toothed, faces glabrous or hairy, often tomentose, usually gland-dotted as well. Heads radiate or discoid, in ± corymbiform arrays. Involucres obconic to hemispheric, 415+ mm diam. Phyllaries 513+ in 23+ series, subequal, usually membranous- or scarious-margined (often yellowish, whitish, or purplish). Receptacles flat or convex, epaleate (except H. newberryi). Ray florets 0 or 8, pistillate, fertile; corollas white to ochroleucous. Disc florets 1270+, bisexual, fertile; corollas usually yellow to ochroleucous or whitish to purplish, tubes longer than or about equaling funnelform or abruptly dilated, campanulate throats, lobes 5 (reflexed at anthesis). Cypselae obpyramidal (4-, sometimes 5-angled, each face usually 14-ribbed, glabrous or hirtellous to villous) ; pappi 0 or of 1222 orbiculate to spatulate scales. x = 17.[62] [more]

Hymenostemma

[more]

Hymenothrix

Annuals, biennials, or perennials, 10-70[-150] cm. Stems erect, branched. Leaves basal and cauline; mostly alternate (proximal opposite) ; petiolate; blades 2-ternately [pinnately] lobed, ultimate margins entire, faces usually ± scabrellous (hairs white, antrorse, 0.1-0.5 mm), sometimes glabrate, sometimes gland-dotted. Heads radiate or discoid, in corymbiform to paniculiform arrays. Involucres obconic to hemispheric, 4-8+ mm diam. Phyllaries persistent, 8-16 in 2-3 series (reflexed in fruit, obovate or oblanceolate to linear, subequal, sometimes subtended by 1-3 bractlets, thin-herbaceous to membranous, margins scarious, often tinged with purple). Receptacles flat or convex, knobby or smooth, epaleate. Ray florets 0, or 3-8+, pistillate, fertile; corollas yellowish. Disc florets 10-30+, bisexual, fertile; corollas yellowish or whitish or pinkish to purplish (sparsely glandular-hairy), tubes about equaling cylindric throats or much longer than broadly funnelform throats, lobes 5, lance-oblong or lance-linear. Cypselae obpyramidal, 4-5-angled, faces ribbed and sparsely hairy (hairs straight) ; pappi persistent, of 12-18 narrowly lanceolate to subulate, medially thickened, scarious-margined scales in 1 series, some or all ± aristate. x = 12.[63] [more]

Hymenoxys

Hymenoxys (Rubberweed or Bitterweed) is a genus of the botanical family Asteraceae. Plants of this genus are toxic to sheep due to the presence of the sesquiterpene lactone hymenoxon. There are 28 species. [more]

Hyoseris

[more]

Hypochaeris

Hypochaeris is a genus of plants in family Asteraceae. Species include: [more]

Hypochoeris

Hypochaeris is a genus of plants in family . Many species are known as cat's ear. These are annual and perennial herbs generally bearing flower heads with yellow ray florets. They are native to Eurasia, North Africa, and South America. [more]

Hystrichophora

[more]

Ichthyothere

Ichthyothere is a small genus of about 25 flowering plants, found in parts of South America (the Amazon) and Central America. [more]

Idiopappus

Idiopappus is a genus of in the Asteraceae family. It contains the following species: [more]

Ifloga

Inula

Inula is a large genus of about 90 species of flowering plants in the family Asteraceae, native to Europe, Asia and Africa. The genus is thought by some[] to be paraphyletic, based on the study of the different phenolic compounds the various species have.[citation needed] [more]

Inulanthera

[more]

Ionactis

Ionactis, or the Stiff-leaved Asters, is small genus of five species, belonging to the sunflower family (Asteraceae) [more]

Isocarpha

Perennials or subshrubs [annuals], 10-150 cm. Stems usually erect, sometimes basally decumbent [creeping]. Leaves cauline; mostly opposite (distal sometimes alternate) [alternate]; petiolate or sessile; blades ± 3-nerved, elliptic to narrowly lance-elliptic [ovate or lanceolate to linear], margins entire or serrulate [dentate], faces glabrate to weakly hirsutulous or pilosulous, gland-dotted. Heads discoid, borne singly or in tight, corymbiform to subcapitate [paniculiform] arrays. Involucres ± obconic, 4-6 mm diam. Phyllaries persistent, 10-15+ in 2+ series, [1-]2-3[-6]-nerved, ovate or elliptic to lanceolate or linear, ± equal. Receptacles conic to columnar, paleate (paleae similar to inner phyllaries). Florets 60-200+; corollas white or pinkish, throats funnelform (lengths ca. 2 times diams.) [cylindric or campanulate], lobes 5, ± deltate; styles: bases enlarged, glabrous [papillose], branches filiform. Cypselae prismatic, 5-ribbed, glabrous [pubescent]; pappi 0. x = 10.[64] [more]

Isocoma

Goldenbush (Isocoma) is a genus of about 12 species of flowering semi-woody shrubs from the sunflower family (Asteraceae) found mostly in the semi-arid areas of Southwestern United States and Mexico. [more]

Iva

Iva can mean: [more]

Ixeris

[more]

Jalcophila

Jalcophila is a genus of in the Asteraceae family. It contains the following species: [more]

Jasonia

[more]

Jaumea

Perennials, to 30+ cm (rhizomatous or stoloniferous). Stems sprawling, ascending, branched mostly from bases. Leaves opposite; sessile; blades spatulate to linear (succulent), margins entire, faces glabrous. Heads radiate [discoid], borne singly. Involucres cylindric to obconic, 4-8+ mm diam. Phyllaries 12-15 in 3+ series (ovate to lanceolate, unequal, succulent to membranous). Receptacles conic, epaleate. Ray florets [0] 3-10, pistillate, fertile; corollas yellow. Disc florets 20-50+, bisexual, fertile; corollas yellow, tubes about equaling narrow, cylindric throats, lobes 5, deltate. Cypselae obconic to clavate or columnar (10-ribbed, glabrous) ; pappi usually 0, rarely persistent, of 1-5 subulate scales. x = 19.[65] [more]

Jefea

Subshrubs or shrubs, 10-100[-200+] cm. Stems erect, branched ± throughout. Leaves cauline; opposite (proximal) or alternate; petiolate; blades (usually 3-nerved) deltate, lanceolate, oblanceolate, or suborbiculate, bases cuneate to truncate, margins entire or lobed [toothed], faces scabrellous to hispid and gland-dotted [densely woolly abaxially]. Heads radiate, borne singly. Involucres campanulate to hemispheric, 6-10+ mm diam. Phyllaries persistent, [22-]26-38+ in 3-4+ series (outer 2-6+ spreading, similar to foliage in shape, texture, and indument, inner appressed, more papery to scarious or membranous). Receptacles convex to conic, paleate (paleae persistent, lance-linear, conduplicate). Ray florets 5-13[-20], pistillate, fertile; corollas yellow to orange. Disc florets 30-60[-100+], bisexual, fertile; corollas yellow to orange, tubes shorter than or about equaling funnelform throats, lobes 5, deltate. Cypselae weakly obcompressed, 3-angled (peripheral) or strongly compressed (inner) and oblanceolate to rounded-cuneate, some or all winged; pappi fragile or persistent, of 2-3 subulate scales or awns plus 2-8+ shorter, distinct or basally connate, erose or lacerate scales (often with an additional seta on inner shoulder of each cypsela). x = 14.[66] [more]

Joseanthus

Joseanthus is a genus of in the Asteraceae family. It contains the following species: [more]

Jungia

Jungia is a genus of in the Asteraceae family. It contains the following species: [more]

Jurinea

[more]

Kalimelis

Kalimeris

Kalimeris (or the Kalimeris Asters) is a small genus with eight species from the sunflower family (Asteraceae). [more]

Karelinia

Kaunia

Kaunia is a genus of 14 species of South American shrubs or small trees. Its range is centered in Bolivia but it is also found in Argentina, southern Brazil, Peru and Ecuador. [more]

Kingianthus

Kingianthus is a genus of in the Asteraceae family. It contains the following species: [more]

Klasea

[more]

Kleinia

Kleinia is a genus of flowering plant in the Asteraceae family. It contains the following species: [more]

Koanophyllon

Koanophyllon is a genus of flowering plant in the Asteraceae family. It contains the following species: [more]

Koelpinia

[more]

Krigia

Annuals or perennials, 3-75 cm; taprooted, fibrous-rooted, or (in K. dandelion) with rhizomes bearing globose tubers. Stems 1-50+, usually erect, rarely decumbent, scapiform or branched distally, glabrous or sparingly villous (proximally). glandular-villous (especially distally). Leaves mostly basal, sometimes cauline; petiolate (petioles often winged) ; blades linear to lanceolate, oblanceolate, or spatulate, margins entire, denticulate, or irregularly pinnately lobed, apices acute to obtuse (faces glabrous or glandular-villous, usually glaucous in K. dandelion and K. biflora) ; distal cauline usually slightly reduced to bractlike. Heads borne singly. Peduncles not distally inflated, ebracteate (from rosettes and from axils of cauline leaves or bracts). Calyculi 0. Involucres turbinate to campanulate, 2-12 mm diam. Phyllaries (4-) 5-18 in 1-2 series, (sometimes reflexed in fruit) linear-lanceolate to ovate, equal, herbaceous, apices acute (faces glabrous). Receptacles flat or low-convex, pitted. glabrous, epaleate. Florets 5-60; corollas yellow to orange (equaling or surpassing phyllaries). Cypselae brown or reddish brown, columnar, obconic, barrel-shaped, or fusiform, not beaked, nerves or ribs 10-20, glabrous ; pappi 0, or persistent, often fragile, usually in 2 series, distinct, outer of 5+, yellowish or brownish scales, inner of 5-45, barbellulate bristles (pappi 0 in K. cespitosa, 0 or 1 series of tiny scales in K. wrightii). x = (4) 5 (6, 9).[67] [more]

Lachanodes

Lachanodes is a genus of the tribe Senecioneae and the family Asteraceae. [more]

Lachnophyllum

Lactuca

Annuals or biennials, 15-450+ cm; taprooted. Stems usually 1, usually erect, branched distally or throughout, glabrous or hairy (sometimes hispid to setose) . Leaves basal and cauline or mostly cauline (at flowering) ; sessile or petiolate; blades orbiculate, ovate, oblong, or lanceolate to oblanceolate, linear, or filiform, margins entire or denticulate to pinnately lobed (faces glabrous or hairy, often ± setose) . Heads borne singly or in corymbiform to paniculiform arrays. Peduncles not inflated distally, sometimes bracteate. Calyculi of 3-10+, deltate to lanceolate bractlets in 2-3 series (sometimes intergrading with phyllaries) . Involucres campanulate to cylindric, 2-5[-8+] mm diam. Phyllaries 5-13+ in ± 2 series (erect or reflexed in fruit), lanceolate to linear, usually subequal to equal, margins sometimes scarious, apices obtuse to acute. Receptacles flat to convex, pitted, glabrous, epaleate. Florets 6-50+; corollas yellow, bluish, or whitish. Cypselae reddish brown, tan, whitish, or purplish to blackish, bodies compressed to flattened, elliptic to oblong, beaks stout (0.1-1 mm, gradually or weakly set off from bodies) or filiform (2-6 mm, sharply set off from bodies), ribs 1-9 on each face, faces often transversely rugulose, usually glabrous; pappi persistent (borne on discs at tips of cypselae or beaks), obscurely double (spp. 1-2), each a minute, erose corona 0.05-0.2 mm subtending 40-80+, white or fuscous, ± equal, barbellate to barbellulate bristles in 1-2 series, or simple (spp. 3-10) of 80-120+, white, ± equal, barbellulate to nearly smooth bristles in 2-3+ series. x = 9.[68] [more]

Laennecia

Perennials or subshrubs, 1080 cm (± succulent). Stems erect to sprawling, branched from bases or throughout. Leaves cauline; opposite; sessile; blades filiform to linear, margins entire, faces glabrous or glabrescent. Heads radiate, (525) in corymbiform arrays. Involucres obconic, 2.55+ mm diam. Phyllaries persistent, 45 in 1 series (lance-elliptic to ovate or orbiculate, membranous to subscarious). Receptacles convex, epaleate. Ray florets 36, pistillate, fertile; corollas yellow. Disc florets 1830(60) [100+], bisexual, fertile; corollas yellow, tubes shorter than or equaling cylindric or funnelform throats, lobes 5, deltate to lance-deltate. Cypselae ± cylindric (1015-ribbed) ; pappi persistent, of 2025+ barbellulate bristles. x = 18.[69] [more]

Lagascea

Shrubs [annuals, perennials], to 50-100[-300] cm. Stems erect [ascending to decumbent], branched from bases or ± throughout. Leaves cauline ; opposite; petiolate [sessile]; blades 3-nerved, lance-ovate to ovate [lanceolate to oblanceolate], bases broadly cuneate [to sub­auriculate], margins ± serrate, faces usually sericeous to strigose or glabrate, often stipitate-glandular. Heads discoid, borne in headlike glomerules (of [8-]30-50+, 1(-2) [-8]-flowered heads, glomerules borne singly or in ± corymbiform [racemiform] arrays). Involucres cylindric, 1-2 mm diam. (glomerules of heads usually subtended by leaves or ± foliaceous bracts). Phyllaries persistent, 4-5[-8+] in ± 1 series (linear-attenuate, proximally connate, often 1 or more with 1[-3+] glands in abaxial face). Receptacles convex (often hirtellous), rarely paleate (paleae linear). Ray florets 0. Disc florets 1(-2) [-8], bisexual, fertile; corollas yellow [white, pink, or red], tubes shorter than cylindric to campanulate throats, lobes 5, lance-linear to lance-ovate [rounded-deltate] (often hairy). Cypselae (brown to black) narrowly cylindric to obovoid or clavate (faces glabrous or pilosulous, minutely grooved) ; pappi ± coroniform. x = 17.[70] [more]

Lagenifera

[more]

Lagenophora

[more]

Laggera

[more]

Lagophylla

Lagophylla is a small genus of flowering plants in the sunflower family. These are annual plants with small yellow flowers which open during the night. The leaves are furry, giving the plants of this genus their common name, hareleaf. There are four species, all native to western North America, especially California. [more]

Lamyropsis

Lamyropsis is a genus of in the Asteraceae family. It contains the following species: [more]

Lapsana

Lapsana is a genus of flowering plants in the family Asteraceae, containing a single species, Lapsana communis (Nipplewort). It is native to Europe and northern Asia. [more]

Lapsanastrum

Annuals [biennials]. 10-20 cm. taprooted [occasionally stoloniferous]. Stems 1-20+. prostrate, simple or sparingly branched distally, slender, glabrous. Leaves basal and cauline; petiolate or sessile; basal blades oblanceolate, lyrate-pinnately lobed (lateral lobes relatively wide, terminals relatively large) ; cauline relatively few, reduced. Heads in loose, corymbiform arrays or borne singly. Peduncles not inflated, minutely bracteate or naked. Calyculi of 2-4 scalelike bractlets (to 1 mm, equal), glabrous . Involucres cylindro-campanulate, 4-8 mm diam. Phyllaries 5[-7] in 1 series, broadly to narrowly lanceolate, equal, margins not scarious, apices acute to acuminate, faces glabrous. Receptacles ± flat, smooth, glabrous, epaleate. Florets 5-8. corollas yellow (glabrous [pubescent]). Cypselae golden brown, oblong, adaxially flattened, (often 2-winged with 1-2 apical hooklike projections [hooks 0 in some species]), not beaked, ribs 10-13, ciliate; pappi 0. x = 8.[71] [more]

Lasianthaea

Perennials [shrubs], 10-60+ [-700] cm (rootstocks bearing tubers). Stems erect, branched ± throughout. Leaves cauline; opposite; petiolate; blades (usually 3-nerved) rounded-deltate to ovate or lance-ovate [lanceolate], bases cuneate to rounded or truncate, margins serrate, faces ± scabrous. Heads radiate, borne singly [in corymbiform arrays]. Involucres hemispheric [obconic], [4-]10-14[-25+] mm diam. Phyllaries persistent, 12-20 in 2-5 series (ovate to lanceolate, subequal or outer shorter [longer], herbaceous to papery). Receptacles convex, paleate (paleae membranous to indurate, conduplicate, apices acute [erose]). Ray florets [4-]11-14[30], pistillate, fertile; corollas yellow to orange [purplish]. Disc florets 20-100+[-200+], bisexual, fertile; corollas yellow to orange [purplish], tubes about equaling ampliate, cylindric throats, lobes 5, deltate. Cypselae 3-angled (ray) or strongly compressed or flattened (all with sharp edges, not truly winged) ; pappi persistent, of 2(-3) subulate scales or awns (continuous with margins of cypselae) plus 0-4 shorter scales. x = 10, 11?[72] [more]

Lasiopogon

Lasiopogon is a genus of in the Asteraceae family. It contains the following species: [more]

Lasiospermum

[more]

Lasthenia

Lasthenia, commonly known as goldfields, is a genus of the botanical family Asteraceae. The genus is named after Lasthenia, a cross-dressing female pupil of the ancient Greek philosopher Plato. [more]

Launaea

Launaea is a genus of flowering plant in the Asteraceae family. It contains the following 54 species, infra-taxons and synonymes excluded : [more]

Layia

Annuals, 2-60(-130) cm. Stems usually ± erect (prostrate in L. chrysanthemoides and L. platyglossa of coastal bluffs). Leaves mostly cauline; proximal opposite, most alternate; sessile; blades ovate, lanceolate, or oblanceolate to linear, sometimes 1-2-pinnatifid, ultimate margins toothed or entire, faces glabrous or hirsute to strigose (distal leaves sometimes stipitate-glandular as well). Heads usually radiate (discoid in L. discoidea), borne singly or in ± corymbiform arrays. Peduncular bracts: pit-glands, tack-glands, and/or spines 0. Involucres ± hemispheric, campanulate, cylindric, ellipsoid, obconic, or urceolate, 2-15+ mm diam. Phyllaries 0 (then outer paleae functioning as phyllaries, in L. discoidea), or 3-27 in 1(-2) series (lanceolate to lance-attenuate or oblanceolate, herbaceous, each usually wholly enveloping a subtended ray ovary, abaxially hirsute to strigose or scabrous, sometimes glandular). Receptacles flat to convex, setulose, paleate (paleae falling, in 1 series, between rays and discs or subtending ± all disc florets, distinct, phyllary-like, more scarious). Ray florets 0 or 3-27, pistillate, fertile; corollas yellow, cream, white, or bicolored. Disc florets 5-120+, bisexual, fertile; corollas yellow, tubes shorter than funnelform throats, lobes 5, deltate (anthers ± dark purple or yellow to brownish; styles glabrous proximal to branches). Ray cypselae obcompressed, clavate (± arcuate to falcate, basal attachments central, apices beakless, faces glabrous or sparsely hairy) ; pappi 0. Disc cypselae ± clavate (usually ± strigose to sericeous, sometimes glabrous) ; pappi 0 or of 1-32 elliptic, lance-attenuate, ovate, setiform, or subulate, glabrous, scabrous, or plumose scales or bristles (often each basally villous and/or adaxially woolly). x = 8.[73] [more]

Lecocarpus

Lecocarpus is a plant genus in the family Asteraceae, native to Gal?pagos Islands, Ecuador. [more]

Leibnitzia

Perennials, 5-60+ cm (fibrous-rooted; stems 1-11, scapiform, sometimes bracteate). Leaves basal; petiolate; blades elliptic to obovate, oblanceolate, or lyrate, bases cuneate, margins usually sinuately lobed to dentate, sometimes entire or pinnatifid, abaxial faces thinly gray-tomentose [covered with dense wool], adaxial faces glabrous or glabrescent (vernal leaves appearing after or concurrently with first heads). Heads quasi-radiate (see florets), borne singly (erect in bud, flowering, and fruit). Involucres cylindric to campanulate, 9-20+ mm. Phyllaries in 3-4+ series, lanceolate to lance-linear, unequal, apices acute to acuminate. Receptacles flat to convex, foveolate to alveolate, glabrous, epaleate. Florets: outer 6-15 pistillate, fertile, corollas usually pinkish to purplish (vernal with relatively broad laminae ± equaling tubes and bifurcate inner lips, autumnal with relatively narrow, greatly shortened laminae) ; inner 6-20+ florets bisexual, fertile, corollas usually whitish (vernal funnelform, 2-lipped, lobes 5, recurved or coiled, autumnal narrowly tubular, barely 2-lipped or nearly actinomorphic, lobes 5, erect) ; anther basal appendages entire, apical appendages lanceolate; style branches relatively short, apices rounded to truncate (abaxial faces pilose). Cypselae ± fusiform (somewhat flattened), distally ± constricted into relatively broad necks or narrow beaks 1/5-1/3+ lengths of bodies, ribs [5-]8+, faces strigose to hispid (hairs duplex, relatively long, apices sharp-pointed), not glandular; pappi of 50-80+ stramineous, barbellulate bristles. x = 23.[74] [more]

Leiocarpa

[more]

Leontodon

Hawkbits (Leontodon spp.) are dandelion-like flowers in the family Asteraceae (Compositae). Their English name derives from the mediæval belief that hawks ate the plant to improve their eyesight. Although originally native to Eurasia and North Africa, they have since become established in other countries, including the United States and New Zealand. [more]

Leontopodium

Leontopodium is a genus of plants in the daisy family, which includes edelweiss (Leontopodium alpinum), a well-known plant from the mountains of Europe. The term edelweiss can, more rarely, refer to other members of the genus. The genus contains about 30 species, native to Europe and Asia (and perhaps the Americas). [more]

Lepidaploa

Lepidaploa is a genus of in the Asteraceae family. It contains the following species: [more]

Lepidesmia

Lepidolopha

[more]

Leptinella

[more]

Lessingia

Lessingia is a genus of plants in the daisy family which are native to western North America. Some species are endemic to California. Lessingias are generally daisylike in appearance with white, yellow, or purple flowers, but they vary in appearance. Some lessingias are sometimes treated as members of different genera. The San Francisco lessingia, Lessingia germanorum, is an endangered species. [more]

Lessingianthus

[more]

Leucanthemella

Perennials, (20-) 50-150 cm (not aromatic; not rhizomatous). Stems usually 1, erect, usually branched distally, ± hairy (hairs basi- or medi-fixed). Leaves cauline; alternate; sessile; blades oblong to lanceolate [pinnate] (bases sometimes ± clasping), margins often with 2-4 lobes proximally, serrate distally, faces hairy or glabrous, gland-dotted. Heads radiate, borne singly or in 2s or 3s. Involucres hemispheric or broader, 12-25+ mm diam. Phyllaries persistent, 30-50+ in 2-3+ series, distinct, ovate or obovate to oblanceolate (not keeled abaxially), margins and apices scarious (tips not notably dilated). Receptacles convex, epaleate. Ray florets 21-34+, styliferous and sterile; corollas usually white, sometimes reddish, laminae ± ovate to linear. Disc florets 100-150+, bisexual, fertile; corollas usually yellow, sometimes reddish, tubes ± cylindric (± gland-dotted), throats campanulate, lobes 5, deltate (without resin sacs). Cypselae ± columnar, ribs 7-12, faces probably glabrous (pericarps without myxogenic cells or resin sacs) ; pappi 0 (cypselar wall tissues sometimes distally produced as coronas). x = 9.[75] [more]

Leucanthemum

Leucanthemum is a genus of about 70 flowering plants from the sunflower family (). The name Leucanthemum derives from the Greek words leukos, "white," and anthemon, "flower". It occurs in Europe, Northern Africa and the temperate regions of Asia. Many species have been introduced into America, Australia and New Zealand. [more]

Leucheria

Leucheria suaveolens, the Vanilla Daisy, is a species of in the Asteraceae family. It is monotypic within the genus Leucheria. It is endemic to Falkland Islands. Its natural habitats are temperate shrubland, rocky areas, and rocky shores. It is threatened by habitat loss. [more]

Leucomeris

Leucomeris is a genus of in the Asteraceae family. It contains the following species: [more]

Leucoptera

[more]

Leuzea

[more]

Leysera

[more]

Liabum

Liabum is a genus of flowering plant in the Asteraceae family. [more]

Liatris

Liatris (common names: Blazing-star, Gay-feather or Button snakeroot) is a genus of ornamental plants in the Asteraceae family. These plants are used as a popular summer flowers for bouquets. [more]

Ligularia

Perennials, 15-150+ cm (glabrous or scattered-hairy, especially distally [arachno-tomentose]; roots fibrous). Stems usually 1, erect. Leaves basal and cauline; alternate; petiolate (petiole bases dilated, ± sheathing stems) ; blades (basal and proximal largest, cauline smaller distally) palmately [palmati-pinnately] nerved, orbiculate to reniform [elliptic, lanceolate, oblanceolate, ovate], margins dentate [denticulate, serrate, dissected], faces glabrous or sparsely pilosulous (mostly on nerves) [glaucous; arachno-tomentose]. Heads radiate [discoid], in corymbiform [racemiform or spiciform] arrays. Calyculi 0 [1-2+ bractlets]. Involucres cylindric to campanulate, [3-]16-28 mm diam. Phyllaries persistent, [5-]8-13+ in 1-2 series, erect, distinct (margins interlocking) [connate at bases], mostly oblong or lanceolate to linear, subequal, margins usually ± scarious (tips greenish or reddish, not blackened). Receptacles flat to convex, smooth, epaleate. Ray florets [0 or 1-7] 8-14+, pistillate, fertile; corollas (laminae prominent, showy) orange to orange-yellow or brick-red [yellow]. Disc florets [5-]12-100+, bisexual, fertile; corollas orange-yellow to orange, becoming brownish [yellow], tubes longer than cylindric throats, lobes 5, recurved, lance-linear; style branches: stigmatic areas continuous, apices truncate or rounded-truncate. Cypselae (stramineous to brownish) ± ellipsoid [cylindric or fusiform], 5[-10]-ribbed or -nerved, glabrous; pappi persistent (fragile), of 40-100+, reddish [sordid, brownish, purplish], barbellate to barbellulate bristles ([shorter than] longer than cypselae). x = 30.[76] [more]

Limbarda

[more]

Lindheimera

Annuals, 10-120(-300+) cm. Stems erect, distally branched. Leaves cauline; mostly alternate (distal sometimes opposite) ; petiolate (proximal) or sessile; blades mostly lanceolate, oblanceolate, or ovate, bases mostly cuneate, margins coarsely toothed to crenate or ± entire, faces ± scabrellous and/or ± hispid. Heads radiate, borne singly or in (leafy to bracteate) loose, corymbiform arrays. Involucres ± turbinate to hemispheric, 5-12 mm diam. Phyllaries persistent (outer), (8-) 10 in 2 series (outer 4-5 becoming reflexed, usually lance-linear, narrower and shorter than inner). Receptacles an outer ring supporting ray florets plus an inner column supporting disc florets, paleate (paleae linear, conduplicate). Ray florets (4-) 5, pistillate, fertile; corollas lemon to bright yellow. Disc florets 12-25+, functionally staminate; corollas dull yellow to brownish, tubes shorter than funnelform throats, lobes 5, deltate. Cypselae obcompressed, oblanceolate to obovate (winged, faces ± scabrous to scabrellous; each shed with its subtending phyllary and 2 contiguous paleae with their florets) ; pappi 0 (shoulders of cypsela wings often projecting as deltate to cornute processes, sometimes interpreted as pappus). x = 8.[77] [more]

Litogyne

[more]

Llerasia

Llerasia is a genus of in the Asteraceae family. It contains the following species: [more]

Logfia

Annuals, 1-50(-70) cm. Stems 1, erect, or 2-10+, ascending to prostrate. Leaves cauline; alternate; blades subulate to obovate. Heads usually in glomerules of 2-10(-14) in racemiform to paniculiform or dichasiiform arrays, or some [all] borne singly. Involucres 0 or inconspicuous. Phyllaries 0, vestigial, 1-4 (unequal), or 4-6 (equal). Receptacles fungiform to obovoid (heights 0.4-1.6 times diams.), glabrous. Pistillate paleae (except usually innermost) readily or tardily falling, erect to ascending; bodies with 5+ nerves (nerves ± parallel, obscure), lanceolate to ovate or boat-shaped, ± saccate most of lengths (obcompressed to terete, sometimes ± galeate, each ± enclosing a floret) ; wings erect to incurved (apices blunt). Innermost paleae usually all pistillate, in some species bisexual and pistillate, persistent, usually 5 or 8, spreading (and enlarged) in fruit, surpassing other pistillate paleae; bodies lanceolate to ovate. Pistillate florets 14-45+. Functionally staminate florets 0. Bisexual florets 2-10; corolla lobes 4-5, ± equal. Cypselae brown, dimorphic: outer compressed to obcompressed, obovoid to ± cylindric, straight or curved, longer than inner, abaxially gibbous, faces glabrous, smooth, shiny; inner ± terete, faces glabrous, usually papillate to muriculate, sometimes smooth, dull; corolla scars apical to subapical; pappi: outer pistillate 0, inner pistillate and bisexual of (11-) 13-28+ bristles (visible in heads). . = 14.[78] [more]

Lonas

[more]

Lopholaena

Lopholaena is a genus of plants in the family . About 20 species occur in Africa. [more]

Lordhowea

[more]

Loricaria

Loricaria is a genus of armored catfishes native to South America. [more]

Lucilia

A genus in the Kingdom Animalia.[79] [more]

Lychnophora

[more]

Lycoseris

Lycoseris is a genus of in the Asteraceae family. It contains the following species: [more]

Lygodesmia

Perennials, 5-80 cm; rhizomatous or taprooted (roots vertical, rhizomes spreading). Stems 1-5+, (green to gray-green, rushlike, ± striate), simple to or much branched proximally and/or distally, usually glabrous, rarely tomentulose. Leaves basal (sometimes in rosettes) and cauline; sessile; blades linear to subulate, sometimes reduced to scales, margins entire or sparingly pinnately laciniately lobed (faces usually glabrous, rarely tomentulose). Heads borne singly or in loose, corymbiform arrays. Peduncles not inflated distally, bracteate. Calyculi of 8-16, ovate to subulate or scalelike bracteoles in 1-2 series, unequal, margins scarious to erose-ciliate, faces glabrous or tomentulose, sometimes roughened. Involucres cylindric, 5-8 mm diam. (apices truncate, narrow or spreading). Phyllaries 5-12 in ± 1 series, grayish green, ± linear, equal, margins scarious, faces glabrous or puberulent, sometimes roughened . Receptacles flat, sometimes pitted, sometimes scabrous, epaleate. Florets 5-12; corollas usually pink to lavender or purple, rarely white. Cypselae pale green to tan, subcylindric, straight or arcuate, subterete or longitudinally angled or sulcate, apices sometimes narrowed, not beaked, faces smooth or rugose-roughened, glabrous; pappi persistent, of 60-80, tawny or white, ± connate, smooth bristles in 1-2+ series. x = 9.[80] [more]

Machaeranthera

Machaeranthera is a genus of flowering plants in the daisy family which are known by the common name tansyaster. Tansyasters are variable in appearance. Some are small singular wildflowers while others are sprawling shrubs. Several species easily hybridize with each other as well, making identification difficult. In general, members of the genus may be identified by the sharp-pointed, dagger-shaped anthers in the disc florets at the center of the flower. The flower heads are usually daisylike and are usually a shade of purple or blue, but may be pink, yellow, or white. Tansyasters are native to western North America. [more]

Macledium

[more]

Madia

Madia is a genus of annual or perennial usually aromatic herbs, which have yellow flowers, in the family Asteraceae (sunflower family). They are sometimes known as tarweeds. The 21 species in this genus are native to western North America and southwestern South America. The name Madia is derived from a Chilean name ("Madi") for one of the members of the genus. [more]

Mairia

[more]

Malacothrix

Malacothrix may refer to: [more]

Malperia

Malperia is a monotypic plant genus in the daisy family which is made up of the sole species Malperia tenuis. This plant's common name is brown turbans or brownturbans. It is a rare plant endemic to the Sonoran Desert of the U.S. state of California and the Mexican state of Sonora. This is a small annual with white or pinkish bell-shaped flowers. [more]

Mantisalca

Biennials or perennials, 50-100 cm. herbage not spiny. Stems erect, branched. Leaves basal and cauline; petiolate (basal) or sessile (cauline) ; blade margins ± lobed (proximal) or dentate or lobed (distal), sparsely hirsute (basal and proximal cauline) or glabrous (distal cauline) . Heads radiant, borne singly. Involucres ovoid to spheric, 10-15 mm diam. Phyllaries many in 6-8 series, unequal, appressed, ovate. margins entire, apices obtuse to acute. narrowly membranous fringed, each with a short deciduous spine. Receptacles flat, epaleate, long-bristly. Florets many; outer neuter, corollas expanded and ± raylike, ± bilateral, staminodes present; inner fertile, corollas purple (rarely white), radial, tubes very slender, throats narrowly funnelform, lobes linear; anther bases tailed, apical appendages oblong; style branches: fused portions with minutely hairy nodes, distinct portions minute. Cypselae ± barrel-shaped, ± compressed, with elaiosomes ribbed, transversely roughened, apices without prominent collars, smooth, faces glabrous, basal attachment scars oblique or lateral; pappi of several series, outer of stiff, scabrous bristles. inner a single abaxial scale. x = 9, 10, 11.[81] [more]

Marshallia

Perennials, (10-) 20-80(-120) cm (fibrous-rooted, usually with caudices, sometimes rhizomatous). Stems erect, sometimes branched (striate). Leaves basal and/or cauline; alternate; petiolate or sessile; blades (1- or 3-nerved) elliptic, linear, linear-elliptic, linear-oblanceolate, oblanceolate, ovate, or spatulate, margins entire, faces glabrous. Heads discoid, borne singly or in open, corymbiform arrays (peduncles relatively long). Involucres hemispheric to obconic, 10-25+ mm diam. Phyllaries persistent, 12-24 in ± 2 series (lanceolate, linear, oblong, ovate, or rhombic, subequal, herbaceous, midnerves often keeled, proximal margins often scarious). Receptacles conic or convex (usually hollow), paleate (paleae linear to spatulate, distally herbaceous). Ray florets 0. Disc florets (20-) 45-90(-160+), bisexual, fertile; corollas pale lavender, pink, or purple, or white, (usually hairy) tubes longer than to nearly equaling throats, lobes 5, lance-linear to linear-oblong (often contorted). Cypselae turbinate or clavate (5-angled, ribs 10, often hairy) ; pappi persistent, of 5(-6) scarious to membranous (hyaline, sometimes scaberulous) scales. x = 9.[82] [more]

Matricaria

Matricaria is a genus of flowering plants in the sunflower family (Asteraceae). Some of the species have the common name of "mayweed," but this name also refers to plants not in this genus. [more]

Melampodium

Melampodium a genus of flowering plants in the sunflower family, Asteraceae. [more]

Melanodendron

Melanodendron integrifolium (Black Cabbage Tree) is one of the endemic trees in the Asteraceae family from the island of Saint Helena (South Atlantic Ocean). It is related to the Saint Helenan gumwoods (Commidendrum spp.) and is the commonest of the remaining cabbage tree species of Saint Helena, although it is considered endangered due to the restricted population size. [more]

Melanthera

Perennials or subshrubs, 30-220 cm. Stems usually erect or spreading, sometimes sprawling or scandent, branched throughout (± 4-angled and sulcate, usually scabro-hispid, caudices usually ± woody, often ± spheric). Leaves cauline; opposite; petiolate or nearly sessile; blades (usually 3-nerved) usually lance-elliptic, linear, oblanceolate, ovate-elliptic, or ovate, sometimes deltate to 3-lobed, bases cuneate to truncate (sometimes hastate or with antrorse basal lobes), margins crenate or serrate (often irregularly), faces usually scabro-hispid, sometimes glabrescent. Heads discoid [radiate], borne singly or in loose, corymbiform arrays. Involucres ± hemispheric or broader, 6-20 mm diam. Phyllaries persistent, mostly 8-16 in 2-3 series (mostly ovate to lanceolate, subequal to unequal, bases pallid, with or without green veins, apices herbaceous, tips usually ± mucronate). Receptacles flat to convex or convex-hemispheric, paleate (paleae oblanceolate, conduplicate, apices mucronate, pungent, erect or spreading to recurved). Ray florets 0 [8-15]. Disc florets 20-100+, bisexual; corollas white [pale to bright yellow], tubes shorter than narrowly funnelform to cylindric throats, lobes 5, ± deltate (anther sacs black; style branches stigmatic in 2 lines, appendages lance-triangular, papillate). Cypselae (± brown) obpyramidal, (3-) 4-angled, not or slightly compressed (striate, rarely verrucose-tuberculate, glabrous) ; pappi readily falling, of 2-12 barbellulate bristles or awns. x = 15.[83] [more]

Metalasia

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Microcephala

Microglossa

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Micropus

A genus in the Kingdom Animalia. [more]

Microseris

Microseris is a large genus of the family Asteraceae, represented on several continents. Common names include murnong, yam daisy, and silverpuffs. [more]

Microtrichia

Mikania

Mikania is a genus of about 450 species in the family of Asteraceae. The name honors the Czech botanist Johann Christian Mikan. Members of the genus are stem twiners and lianas and are common in the neotropical flora. Mikania originates from South America. A few species, such as , are found in temperate areas of North and South America, and nine species are known from the Old World tropics. As with other plants in the tribe Eupatorieae, the flowers have disc florets and no ray florets. [more]

Mikaniopsis

Mikaniopsis is a genus of in the Asteraceae family. [more]