Common Names in English:
Dwarf Alpine Hawksbeard, Small Hawksbeard, Tiny Hawksbeard
The largest family of flowering plants , the Compositae (Asteraceae), comprising about 1,100 genera and more than 20,000 species and characterized by many small 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.
The Lactuceae are a tribe of closely related genera of the sunflower family that are easily recognized because the flowering heads are composed of wholly of ligulate florets that are usually 5-lobed. Another very distinguishing feature is the milky sap . Although not apparent without magnification, the pollen is distinctive in that the spines are more or less restricted to discrete ridges or flanges on the surface of the grain. In other members of the family the spines are distributed more or less evenly over the surface of the pollen grain . The pappus usually consists of scales or stiff hairs . -- Gerald D. Carr.
, biennials, or perennials
, 3-120 cm; usually taprooted, sometimes rhizomatous
deep or shallow, woody or fibrous
, caudices often woody). Stems 1-20+. erect
) or branched, usually striate
, often densely hispid
). Leaves basal (often in rosettes) and cauline; petiolate
(at least basal, petioles
) ; basal blades mostly elliptic
, or lanceolate to linear
, or spatulate
, often lyrate or runcinate, margins
, serrate, toothed
, or pinnately lobed
sometimes toothed; cauline usually present, lobed or entire, usually reduced in size and lobing distally. Heads (erect) usually in cymiform, corymbiform
, or paniculiform
arrays, sometimes borne singly. Peduncles not inflated
distally, not bracteate
. Calyculi of 5-12, reduced, subulate
to lanceolate or deltate bractlets
in ± 1 series, mostly unequal, glabrous, tomentulose
, or setose. Involucres cylindric
(sometimes becoming turbinate
in fruit), 4-15 mm diam. Phyllaries 5-18 in 1-2 series. lanceolate, equal or subequal
becoming thickened and keeled
, keels sometimes pronounced in fruit) margins green to yellowish, often scarious
, apices acute to acuminate, abaxial
, or setose, sometimes stipitate-glandular, adaxial
glabrous or with appressed
hairs. Receptacles flat or convex
, usually pitted
, glabrous or hairy, epaleate [paleate, paleae narrow, thin]. Florets 5-100+; corollas usually yellow or orange, sometimes white, pink, or reddish. Cypselae monomorphic
. yellow, brown, green, red, and/or black, subcylindric
or subterete, usually curved
, apices tapered or beaked
10-20, sometimes spiculate-roughened, faces glabrous or hispidulous
; pappi persistent
or falling, of 80-150, usually distinct
, sometimes basally connate
, white to tawny
to fine, ± equal (or outer shorter), barbellulate
in 1-2 series. x = 3, 4, 5, 6, 11.
Species ca. 200: North America, Eurasia , Africa; introduced nearly worldwide.
Crepis is generally recognized by the rosettes of coarse, often pinnately lobed leaves, erect heads, epaleate receptacles, calyculate involucres. yellow corollas, subcylindric or fusiform, ribbed cypselae, and pappi of barbellulate bristles. The taxonomy and evolutionary relationships of Crepis were studied by E. B . Babcock (1947) and his associates. Their work was thorough and important because of the effort to incorporate cytogenetic information in the evolutionary analysis. Extensive survey of chromosome number and karyotype indicated two major ploidy groups in Crepis, corresponding to New World and Old World species complexes. Of the 12 species of Crepis native to North America, 10 are polyploids with x = 11. The core diploid populations commonly occupy discrete ecologic zones and are thought to be entirely distinct from one another, yet they are interconnected by a continuous complex series of intergrading polyploid forms that are partly or completely apomictic (Babcock). The polyploids are of two forms, autopolyploids that are similar to the diploids, and allopolyploids that combine the characteristics of two or more diploid species. The allopolyploid forms of hybrid origin may exhibit the characteristics of multiple parental species and therefore are difficult to classify. Some of the heterogeneous apomictic populations, or groups of populations, have been grouped together and recognized as subspecies ; those taxa are often difficult to identify and further study is clearly needed. Despite these difficulties, the subspecific taxa of Babcock were tentatively included in the present study. The Old World species are mostly diploid (n = 3, 4, 5, or 6). Babcock concluded that there was a progressive decrease in the chromosome numbers, from n = 6 to n = 3. Along with the decrease is a corresponding increase in chromosome asymmetry and reduction in chromosome length.
Species Crepis nana
, 10-20 cm (taproots
often with creeping
caudices relatively short). Stems 1-10+, erect
(in dense clumps
or proximally branched, glabrous
basal and cauline; petiolate
(at least basal) ; blades
orbiculate to spatulate
, less often lyrate or runcinate, 2-9 ×
0.5-2.5 cm, (bases
abruptly 0) margins
entire or pinnately lobed
to acute, faces
glabrous (glaucous). Heads 5-80+
(among or beyond leaves), in cymiform arrays. Calyculi of
5-10 (dark green or blackish), lanceolate, glabrous bractlets 2-3
, 8-13 × 3-4 mm. Phyllaries
8-10, (dark green or purple medially) oblong
, 10-11 mm, (margins
) apices acute, faces glabrous. Florets
9-12; corollas yellow, purple-tinged abaxially, 9-12 mm. Cypselae
golden brown, subcylindric
, 4-7 mm, apices sometimes
tapered (not beaked
10-13 (broad, smooth
) ; pappi (falling)
bright white, 4-6 mm. 2n = 14. [source]
Crepis nana occurs in North America and northern Asia. It is recognized by the tufted , cespitose habit, elongate roots and rhizomes, and occurrence in alpine habitats . In the typical form, the plants are tufted, the stems are not leafy, and the heads are borne among the leaves. Taller specimens with elongated, leafy branches and heads borne well beyond the basal leaves are sometimes recognized as subsp. ramosa; these characteristics appear to be part of the normal range of variation for the species. [source]
Crepis nana is closely related to C. elegans, differing mainly in the shape of the cypselae. The cypselae of C. nana are almost always more columnar , wider at bases, and with broader ribs, than those of C. elegans. [source]
The name Crepis nana subsp. clivicola Legge is invalid . [source]
Flowers: Bloom Period: May, June, July, August, September. • Flower Color: yellow
Size: under 6" tall.
Typically found at an altitude of 0 to 3,925 meters (0 to 12,877 feet).
Sunlight: Sun Exposure: Full sun .
Temperature: Cold Hardiness: 1, 2a, 2b, 3a, 3b, 4a, 4b, 5a, 5b. (map)
- Whittaker & Margulis,1978
- Haeckel, 1866
- Cavalier-Smith, 1981
- Sinnott, 1935 ex Cavalier-Smith, 1998
- Vascular Plants
- Brongniart, 1843
- Takhtajan, 1967
- Takhtajan Ex Reveal, 1992
- Lindley, 1833
- Giseke, 1792, nom. cons., nom. alt.
- Subfamily: Cichorioideae ()
- Family: Compositae () - Giseke, 1792, nom. cons., nom. alt.
- Order: Asterales () - Lindley, 1833
- Superorder: Campanulanae () - Takhtajan Ex Reveal, 1992
- Subclass: Asteridae () - Takhtajan, 1967
- Class: Spermatopsida () - Brongniart, 1843
- Subphylum: Euphyllophytina ()
- Phylum: Tracheophyta () - Sinnott, 1935 ex Cavalier-Smith, 1998 - Vascular Plants
- Subkingdom: Viridaeplantae () - Cavalier-Smith, 1981
- Kingdom: Plantae () - Haeckel, 1866 - Plants
C. nana ramosa Babcock • Crepis nana var. lyratifolia (Turczaninow) Hultén
Status: Accepted Name
Comment: Data Providers: Govaerts World Compositae Checklist A-G, IPNI, Tropicos, LCR Editor. GCC LSID: urn :lsid:compositae.org:names:B046E0DA-5073-42BE-8F4B-EFA65FC2EB0F
Last scrutiny: 02-Nov-09
Members of the genus Crepis
ZipcodeZoo has pages for 44 species, subspecies, varieties, forms, and cultivars in this genus:
C. acuminata (Long-Leaf Hawksbeard) · C. acuminata acuminata (Longleaf Hawksbeard) · C. acuminata pluriflora (Longleaf Hawksbeard) · C. atribarba (Hawksbeard) · C. atribarba atribarba (Hawksbeard) · C. aurea (Golden Hawks Beard) · C. bakeri (Baker's Hawksbeard) · C. bakeri cusickii (Baker's Hawksbeard) · C. bakeri idahoensis (Baker's Hawksbeard) · C. biennis (Rough Hawksbeard) · C. bursifolia (Italian Hawksbeard) · C. capillaris (Smooth Hawk's-Beard) · C. elegans (Elegant Hawksbeard) · C. foetida (Roadside Hawksbeard) · C. foetida foetida (Stinking Hawksbeard) · C. intermedia (Gray Hawksbeard) · C. modocensis rostrata (Common Hawksbeard) · C. monticola (Mountain Hawksbeard) · C. nana (Dwarf Alpine Hawksbeard) · C. nana ramosa (Dwarf Alpine Hawksbeard) · C. nicaeensis (Turkish Hawksbeard) · C. occidentalis conjuncta (Gray Hawksbeard) · C. occidentalis pumila (Large-Flower Hawk's-Beard) · C. pannonica (Pasture Hawksbeard) · C. pleurocarpa (Naked-Stem Hawksbeard) · C. pulchra (Hawksbeard) · C. pulchra pulchra (Smallflower Hawksbeard) · C. pumila (Largeflower Hawksbeard) · C. rostrata (Modoc Hawksbeard) · C. rubra (Hawksbeard) · C. rubra 'Alba' (Hawks Beard) · C. runcinata andersonii (Dandelion Hawksbeard) · C. runcinata barberi (Barber's Hawksbeard) · C. runcinata hallii (Fiddleleaf Hawksbeard) · C. runcinata hispidulosa (Fiddleleaf Hawksbeard) · C. runcinata imbricata (Fiddleleaf Hawksbeard) · C. runcinata runcinata (Fiddle-Leaf Hawk's-Beard) · C. setosa (Bristly Hawksbeard) · C. tectorum (Narrow-Leaf Hawk's-Beard) · C. tectorum tectorum (Narrowleaved Hawk's Beard) · C. vesicaria (Beaked Hawksbeard) · C. vesicaria haenseleri (Beaked Hawksbeard) · C. vesicaria taraxacifolia (Beaked Hawksbeard) · C. zacintha (Striped Hawksbeard)
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Accessed through GBIF Data Portal February 16, 2008:
- Berkeley Natural History Museums, University and Jepson Herbaria DiGIR provider
- Canadian Museum of Nature, Canadian Museum of Nature Herbarium
- USDA PLANTS, USDA PLANTS Database
- University of Alaska Museum of the North, University of Alaska Museum of the North Herbarium
- University of Colorado Museum, Zoological specimens
- Utah State University, USU-UTC Specimen Database
- Utah Valley State College
- , Utah Valley State College Herbarium
- Biodiversity Heritage Library NamebankID: 2658424
- Catalogue of Life Accepted Name Code: Ast-1823
- Global Biodiversity Information Facility Taxonkey: 13749460
- Globally Unique Identifier: urn:lsid:ipni.org:names:200085-1
- Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 37191
- Natural Heritage Network Species Identifier: PDAST2R0C0
- U.S.D.A. Plant Symbol: CRNAL CRNA
- Zipcode Zoo Species Identifier: 33019
- David J. Bogler "Crepis". in Flora of North America Vol. 19, 20 and 21 Page 214, 216, 217, 219, 222, 223, 228. Oxford University Press. Online at EFloras.org. [back]
- "Crepis nana". in Flora of North America Vol. 19, 20 and 21 Page 224, 228, 231. Oxford University Press. Online at EFloras.org. [back]
- Mean = 1,226.150 meters (4,022.802 feet), Standard Deviation = 858.160 based on 147 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]