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122. Stipagrostis Nees, Linnaea. 7: 290. 1832.
针禾属 zhen he shu
Authors: Shou-liang Chen & Sylvia M. Phillips
Aristida sect. Stipagrostis (Nees) Bentham & J. D. Hooker.
Perennial, sometimes suffrutescent, or rarely annual. Culms tufted. Leaf blades mostly rolled, tough, sometimes deciduous from the sheaths. Inflorescence a narrow or open panicle. Spikelets with 1 floret; glumes scarious, unequal or subequal, 1–11-veined; floret callus laterally bearded, pungent; lemma narrowly cylindrical, indurated, glabrous or sparsely hairy; awn 3-branched, articulated at the lemma apex, a twisted column present or not, at least the central awn branch plumose, lateral branches shorter, often capillary. Stamens 3.
About 50 species: Africa to C Asia; two species in China.
This is a genus of grasses adapted to true desert conditions.
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Spikelets 1.3–1.7 cm; glumes subequal, lower slightly longer; lemma 5–7 mm, apex truncate, ciliolate. |
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1 S. pennata |
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Spikelets 2.5–3 cm; glumes unequal, lower clearly longer; lemma 8–9 mm, apex slightly 2-lobed, glabrous. |
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2 S. grandiglumis |
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Lower Taxa
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