Difference between revisions of "Urochloa ciliatissima"
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|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Panicum ciliatissimutn | |name=Panicum ciliatissimutn | ||
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}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Brachiaria ciliatissima | |name=Brachiaria ciliatissima | ||
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|hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Paniceae;Urochloa;Urochloa ciliatissima | |hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Paniceae;Urochloa;Urochloa ciliatissima | ||
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name=Urochloa ciliatissima | name=Urochloa ciliatissima | ||
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|authority=(Buckley) R.D. Webster | |authority=(Buckley) R.D. Webster | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Linda A. Vorobik;Cindy Roché | ||
| + | |illustration copyright=Utah State University | ||
|distribution=Ark.;Okla.;N.Mex.;Tex. | |distribution=Ark.;Okla.;N.Mex.;Tex. | ||
|reference=None | |reference=None | ||
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|publication year= | |publication year= | ||
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|subfamily=Poaceae subfam. Panicoideae | |subfamily=Poaceae subfam. Panicoideae | ||
|tribe=Poaceae tribe Paniceae | |tribe=Poaceae tribe Paniceae | ||
Latest revision as of 17:56, 11 May 2021
Plants perennial; shortly rhizomatous or with long stolons. Culms 10-40 cm, erect to ascending, solitary or in small clumps; nodes retrorsely villous; internodes glabrous. Sheaths glabrous or with papillose-based hairs; ligules 0.5-1.5 mm; blades 1-7(9) cm long, 2-5 mm wide, glabrous or pilose on both surfaces, margins ciliate basally, with papillose-based hairs. Panicles 3-6 cm long, 0.5-1 cm wide, with 2-6 spikelike primary branches in 2 ranks; rachises scabridulous; primary branches 0.5-2 cm, appressed, axes 0.3-0.4 mm wide, triquetrous, scabridulous, glabrous or puberulent; secondary branches rarely present; pedicels shorter than the spikelets, scabridulous. Spikelets 3-4.5 mm long, 1.5-2 mm wide, plano-convex, solitary, in 2 rows, appressed to the branch axes. Glumes scarcely separate, rachilla between the glumes not pronounced; lower glumes 2.8-3.2 mm, 5-7-veined, glabrous or with long hairs basally; upper glumes 3-4.5 mm, (9)11-13-veined, with¬out cross venation, mostly puberulent, margins pilose-fringed; lower florets staminate; lower lemmas 3-4.5 mm, 7-9-veined, without cross venation, mostly puberulent, margins pilose-fringed; lower paleas present; upper lemmas 2.4-2.8 mm long, 1.3-1.4 mm wide, planoconvex, apices broadly acute to rounded, mucronate; anthers about 1 mm. Caryopses 1.8-3 mm. 2n = 36.
Distribution
Ark., Okla., N.Mex., Tex.
Discussion
Urochloa ciliatissima is endemic to Texas, Oklahoma, and Arkansas, and grows on sandy soils. Reports of its occurrence in Mexico are based on misidentifications (Morrone and Zuloaga 1993).
Selected References
None.