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Urticeae

(Tribe)

Overview

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A Tribe in the Kingdom Plantae.

Taxonomy

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The Tribe Urticeae is a member of the Subfamily Laricoideae. Here is the complete "parentage" of Urticeae:

The Tribe Urticeae is further organized into finer groupings including:

Genera

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Chloranthus

Subshrubs or perennial herbs. Leaves opposite or whorled, serrate; stipules tiny; petioles connected by a transverse ridge on stem. Inflorescences in spikes or branched, arranged in panicles, terminal or axillary. Flowers small, bisexual; perianth absent. Stamens usually 3, rarely 1, on 1 side of apical part of ovary; basal part of connective confluent, or free and connected or overlapped at base, ovoid or lanceolate, sometimes elongated to linear; anthers 1- or 2-loculed; if stamens 3, central anther 2-loculed or occasionally absent, lateral anthers 1-loculed, if stamen 1, anther 2-loculed. Ovary 1-loculed; ovule 1, pendulous, orthotropous; style usually absent, rarely present; stigma truncate or parted. Drupes globose, obovoid, or pyriform.[1] [more]

Dendrocnide

Dendrocnide is a genus of 37 species of shrubs to large trees in the nettle family Urticaceae. They have a wide distribution across Southeast Asia, Australia and the Pacific Islands. [more]

Discocnide

[more]

Dovea

[more]

Fleurya

[more]

Girardinia

Herbs annual or perennial, armed with stinging hairs. Stems sympodial, upper stem often zigzig, often 5-angled. Leaves alternate, petiolate; stipules caducous, intrapetiolar, connate, often broad, foliaceous; leaf blade 3-veined, margin dentate or lobed; cystoliths punctiform. Inflorescences in axillary pairs or solitary, cymes, panicles or spikes, unisexual (plants monoecious or dioecious) ; male inflorescence often long, flowers clustered on rachis of spikes, dichotomous cymes, or panicles; female glomerules lax or dense on rachis of scorpioid cymes, spikes, or panicles. Male flowers: perianth lobes 4 or 5, valvate; filaments inflexed in bud; rudimentary ovary conspicuous. Female flowers: perianth lobes 4, 2 or 3 lobes connate into a tube, 2 or 3-toothed, split to base on 1 side, sometimes also with a small bristle-like segment; staminodes absent. Ovary straight, ovoid; stigma subulate, papillose on 1 side; ovule orthotropous. Achene often large, slightly oblique, often compressed, verrucose; persistent stigma usually reflexed; pedicels simple or swollen. Seeds with thin or no endosperm; cotyledons broad.[2] [more]

Gyrotaenia

Gyrotaenia is a genus of in family Urticaceae. [more]

Hesperocnide

Herbs, annual, with stinging and nonstinging hairs. Stems usually branched, erect, spreading, or reclining. Leaves opposite; stipules present. Leaf blades ovate to broadly ovate, distal blades sometimes broadly elliptic, margins serrate; cystoliths elongate. Inflorescences axillary, globose, nearly globose, or elongate-racemose or paniculate. Flowers unisexual, staminate and pistillate in loose to dense clusters in same inflorescence; bracts absent. Staminate flowers: tepals 4, distinct, equal; stamens 4; pistillode present. Pistillate flowers: tepals 4, connate, forming persistent saclike structure covered with delicate, hooked hairs and completely enclosing mature, flattened achene; staminodes absent; style absent, stigma tufted, persistent. Achenes subsessile, laterally compressed, ovoid, tightly enclosed in persistent tepals. x = 12.[3] [more]

Laportea

Laportea is a genus of plant in family Urticaceae. It contains the following species (but this list may be incomplete): [more]

Lepidothamnus

Lepidothamnus is a of conifers belonging to the podocarp family Podocarpaceae. The genus includes three species of dioecious evergreen trees and shrubs, and creepers. L. intermedius and L. laxifolius are native to New Zealand. L. fonkii is native to the Magellanic subpolar forests ecoregion of southern Chile, where it grows as a low shrub or creeper in moorlands and bogs. [more]

Libocedrus

Libocedrus is a genus of five species of coniferous trees in the cypress family Cupressaceae, native to New Zealand and New Caledonia. The genus is closely related to the South American genera Pilgerodendron and Austrocedrus, and the New Guinean genus Papuacedrus, both of which are included within Libocedrus by some botanists; the four genera together form an example of the Antarctic flora distribution. These genera are rather similar to the Northern Hemisphere genera Calocedrus and Thuja: in earlier days, what is now Calocedrus was sometimes included in Libocedrus. They are much less closely related, as recently confirmed (Gadek et al. 2000). The generic name means "teardrop cedar", apparently referring to drops of resin. [more]

Nageia

Nageia is a genus of conifers belonging to the podocarp family Podocarpaceae. Nageia includes evergreen shrubs and trees, from one to 54 meters in height. Six species are recognized, with N. formosensis recently split out from N. nagi. The podocarp genera have been reshuffled by various botanists; most recently, several species formerly classed as Nageia were moved to the new genus Retrophyllum, and N. falcata was moved to the new genus Afrocarpus. [more]

Nanocnide

Herbs, perennial, with creeping rhizomes. armed with stinging hairs. Stems often caespitose. Leaves alternate, petiolate; stipules persistent, lateral, free, membranous; leaf blade broad, membranous, irregularly 2-5-veined, secondary veins dichotomously branched, margin coarsely dentate or subincised; cystoliths often botuliform. Inflorescences axillary, pedunculate cymes (male) or sessile glomerules (female), unisexual (plants monoecious) ; male dichotomous cymes solitary, with filiform peduncles; female clusters sessile in the same or different axils; bracts present. Male flowers: perianth lobes (4 or) 5, slightly imbricate, transversely crested below apex; stamens (4 or) 5; rudimentary ovary obovoid or urceolate, transparent. Female flowers: perianth lobes 4, unequal, outer (dorsal-ventral) 2 larger, keeled, corniculate below apex, inner 2 smaller, flat, all usually with stinging hairs below apex. Stigma subsessile, penicillate-capitate. ovule orthotropous. Achene straight, ovoid, compressed, invested by the persistent but not enlarged perianth. Seeds erect, with thin endosperm; cotyledons ovate, fleshy.[4] [more]

Neocallitropsis

Neocallitropsis pancheri is a plant species of the family Cupressaceae and the sole species of the genus Neocallitropsis. It is endemic to New Caledonia, where it occurs in small, scattered population along rivers. [more]

Nothotsuga

Nothotsuga is a genus of trees in the family Pinaceae, in many respects intermediate between the genera Keteleeria and Tsuga. It is distinguished from Tsuga by the larger, erect cones with exserted bracts, and (like Keteleeria) male cones in umbels, and from Keteleeria by the shorter leaves and smaller cones. Nothotsuga contains only one species, N. longibracteata, commonly known as the Bristlecone Hemlock, which is found in southeastern China, in southern Fujian, northern Guangdong, northeast Guangxi, northeast Guizhou and southwest Hunan. [more]

Obetia

[more]

Urera

Urera is a genus of flowering shrubs, trees and vines in the nettle family, Urticaceae. Urera is characterized by fleshy fruits (formed by the inflation of the petals), the presence of paintbrush-like stigmas, glabrous , and hairs with bulbed bases, that in some species are stinging. [more]

Urtica

Nettles constitute between 24 and 39 species of flowering plants of the genus Urtica in the family Urticaceae, with a cosmopolitan though mainly temperate distribution. They are mostly herbaceous perennial plants, but some are annual and a few are shrubby. Most of the species have stinging hairs on the stems and leaves. [more]

At least 602 species and subspecies belong to the Genus Urtica.

More info about the Genus Urtica may be found here.

Bibliography

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Footnotes

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  1. Nianhe Xia & Joël Jérémie "Chloranthus". in Flora of China Vol. 4 Page 133. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.
  2. Chen Chia-jui, Ib Friis, C. Melanie Wilmot-Dear "Girardinia". in Flora of China Vol. 5 Page 90. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.
  3. "Hesperocnide". in Flora of North America Vol. 3. Oxford University Press. Online at EFloras.org.
  4. Chen Chia-jui, Ib Friis, C. Melanie Wilmot-Dear "Nanocnide". in Flora of China Vol. 5 Page 84. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.

Sources

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Last Revised: August 24, 2012
2012/08/24 13:51:47