Difference between revisions of "Leptochloa viscida"
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name=Leptochloa viscida | name=Leptochloa viscida | ||
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|authority=(Scribn.) Beal | |authority=(Scribn.) Beal | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Linda A. Vorobik;Karen Klitz | ||
| + | |illustration copyright=Utah State University | ||
|distribution=Calif.;Ariz.;N.Mex.;Tex. | |distribution=Calif.;Ariz.;N.Mex.;Tex. | ||
|reference=None | |reference=None | ||
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|subfamily=Poaceae subfam. Chloridoideae | |subfamily=Poaceae subfam. Chloridoideae | ||
|tribe=Poaceae tribe Cynodonteae | |tribe=Poaceae tribe Cynodonteae | ||
Latest revision as of 17:59, 11 May 2021
Plants annual. Culms (3)10-60 cm, prostrate or erect, round or somewhat compressed, often highly branched; internodes hollow. Sheaths glabrous (rarely sparsely pilose near the base), sometimes with a sticky exudate; ligules 1.2-2.5 mm, truncate, erose to lacerate; blades 1-15 cm long, 1.2-5.5 mm wide, glabrous abaxially and adaxially. Panicles 2-17 cm, with 5-23 racemose branches; branches 1-2.5(3.5) cm, stiff, often included in the upper leaf sheaths. Spikelets 4.5-7.5 mm, more or less imbricate, magenta or green, with 2-6 florets. Glumes triangular, acute; lower glumes 1.6-2 mm, acute; upper glumes 2-2.9 mm; lemmas 2.4-3.5 mm, ovate, membranous, sericeous along the lower veins, lateral veins pronounced, apices acute, obtuse, or truncate, awned, awns 0.5-1.5 mm; paleas minutely scabrous along the veins; anthers 3, 0.4-0.5 mm. Caryopses 1.2-1.6 mm long, 0.4-0.5 mm wide, narrowly elliptic to obovate, transversely elliptic in cross section. 2n = 40.
Distribution
Calif., Ariz., N.Mex., Tex.
Discussion
Leptochloa viscida is a Sonoran Desert species that occurs from southern California to southwestern New Mexico and south into adjacent Mexico. It differs from L. fusca subsp. fascicularis, which grows in the same region, in its consistently short-awned lemmas, smaller panicles, often prostrate and much-branched growth habit, and often reddish florets.
Selected References
None.