Setaria setosa |
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West Indian bristlegrass, West Indies bristlegrass |
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Habit | Plants perennial. |
Culms | 50-100 cm; nodes usually glabrous. |
Sheaths | glabrous or finely pubescent, margins ciliate distally; ligules of 1 mm hairs; blades 15-20 cm long, 6-12 mm wide, flat or folded, often finely pubescent on both surfaces. |
Panicles | 15-20 cm, loosely spikelike, interrupted, attenuate; rachises often villous; branches ascending, lower branches about 2.5 cm; bristles usually solitary, less than 10 mm, antrorsely scabrous. |
Spikelets | 2-2.5 mm, ovate-lanceolate. |
Lower | glumes about 1/2 as long as the spikelets, 3-veined; upper glumes about 2/3 as long as the spikelets, 5-7-veined; lower lemmas equaling the upper lemmas; lower paleas as long as the upper paleas, broad; upper lemmas finely and distinctly transversely rugose. |
2n | = unknown. |
Setaria setosa |
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Distribution |
AL; FL; NJ; PR; Virgin Islands |
Discussion | Setaria setosa is native to the West Indies and Mexico. It is probably a recent introduction to Florida, but appears to be established there. The specimen from New Jersey was from a ballast dump; the species is not established in that state. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 550. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Setaria > subg. Setaria |
Sibling taxa | |
Name authority | (Sw.) P. Beauv. |
Web links |