Difference between revisions of "Setaria reverchonii"
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Revision as of 19:22, 24 September 2019
Plants perennial; rhizomatous, rhizomes, short, sometimes knotty. Culms 30-90 cm; nodes glabrous, strigose, or with appressed hairs. Sheaths with papillose-based hairs, sometimes nearly glabrous, margins ciliate distally; ligules 1-2 mm, of stiff hairs; blades 4-30 cm long, 1-7 mm wide, involute, stiff, scabridulous and narrowed basally. Panicles 5-20 cm, erect, slender, interrupted; rachises scabrous; bristles 2-8 mm. Spikelets 2.1-4.5 mm, elliptic to obovate, randomly dis¬tributed on the branch axes. Lower glumes 1/2 as long as the spikelets, 5-7-veined; upper glumes equaling the upper lemmas, 7-9-veined; lower lemmas equaling the upper lemmas; lower paleas absent; upper lemmas indurate, finely and transversely rugose; upper paleas similar to the upper lemmas.
Distribution
Okla., Fla., N.Mex., Tex.
Discussion
Setaria reverchonii grows in sandy prairies and limestone hills from eastern New Mexico, southwestern Oklahoma, and Texas to northern Mexico.
Selected References
None.
Lower Taxa
Key
| 1 | Blades usually more than 15 cm long; spikelets 3.5-4.5 mm long | Setaria reverchonii subsp. reverchonii |
| 1 | Blades usually less than 15 cm long; spikelets 2.1-3.2 mm long. 2. Blades 2-4 mm wide; spikelets about 2.5 mm long | Setaria reverchonii subsp. ramiseta |
| 2 | Blades 4-7 mm wide; spikelets about 3-3.2 mm long | Setaria reverchonii subsp. firmula |