Eriochloa villosa |
Eriochloa polystachya |
|
---|---|---|
hairy cup grass, ériochloé velue |
Caribbean cupgrass, caribgrass |
|
Habit | Plants annual. | Plants perennial; cespitose, stoloniferous. |
Culms | 30-100 cm, erect or decumbent, sometimes rooting at the lower nodes; nodes and internodes pubescent. |
100-200 cm, decumbent, rooting at the lower nodes; internodes glabrous; nodes 4-10, densely pilose. |
Sheaths | sometimes inflated, glabrous or pubescent; ligules 0.5-1 mm; blades 10-20 cm long, 5-12 mm wide, flat, adaxial surfaces hairy. |
chartaceous to cartilaginous, lower sheaths with papillose-based hairs, upper sheaths glabrous; collars hairy; ligules 0.6-1.2 mm; blades 6-28 cm long, 6-18 mm wide, linear, flat, straight, ascending or drooping, glabrous adaxially. |
Panicles | 3-16 cm long, 1-3 cm wide; rachises villous; branches 2-8, 20-70 mm long, 0.8-1.1 mm wide, velutinous, sometimes winged, with 11-24 solitary spikelets (occasionally paired proximally); pedicels 0.5-1 mm, densely villous below, often with long hairs intermixed with the short hairs, apices with more than 12 hairs of 1.5-2.5 mm. |
8-20 cm long, 41-90 mm wide, open; rachises sparsely pilose to hirsute; branches (5)10-15(18), 2-6 cm long, 0.4-0.6 mm wide, pubescent to setose, not winged, spikelets in unequally pedicellate pairs; pedicels 0.5-1 mm, pubescent, apices glabrous. |
Spikelets | 3.9-5.2 mm long, 2-2.5 mm wide, ovate to elliptic. |
3.2-3.9 mm long, 1.1-1.3 mm wide, lanceolate to ovate. |
Lower glumes | occasionally present as a scale; upper glumes equaling the lower lemmas, ovate to elliptic, glabrous or pubescent, 7-veined; lower lemmas 3.4-5 mm long, 2-2.5 mm wide, 5-veined, acute to apiculate, unawned; lower paleas absent; anthers absent; upper lemmas 3.5-5 mm, ovate to elliptic, acute to apiculate. |
present as a membranous extension of the calluses; upper glumes equaling the lower lemmas, hairy, lanceolate to ovate, 5-veined, acute, unawned; lower lemmas 3-3.5 mm long, 1.1-1.3 mm wide, lanceolate to ovate, glabrous or sparsely pubescent, 5-veined, acute, unawned; lower paleas fully developed or absent; anthers absent or 3; upper lemmas 2.2-2.6 mm, indurate, elliptic, rounded, mucronate, mucros less than 0.2 mm; upper paleas 2-2.5 mm, indurate. |
2n | = 54. |
= 36. |
Eriochloa villosa |
Eriochloa polystachya |
|
Distribution |
CA; CO; FL; IA; IL; KS; MN; MO; MS; NE; OR; PA; VA; WI
|
FL; MS; TX; PR |
Discussion | Eriochloa villosa is a weedy species of eastern Asia that has been found at scattered locations in the Flora region. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Eriochloa polystachya is native to the West Indies, Costa Rica, Honduras, and South America. It was introduced into the United States as a forage crop and is now established at some locations in Florida and Texas. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 509. | FNA vol. 25, p. 515. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Paspalum villosum | |
Name authority | (Thunb.) Kunth | Kunth |
Web links |