Paspalum urvillei |
Paspalum langei |
|
---|---|---|
Vasey grass, Vasey's grass |
rustyseed paspalum |
|
Habit | Plants perennial; cespitose, with a knotty base composed of very short (less than 1 cm) rhizomes. | Plants perennial; cespitose. |
Culms | 50-220 cm, erect; nodes glabrous or pubescent. |
23-125 cm, erect; nodes glabrous or pubescent. |
Sheaths | glabrous or pubescent; ligules 1-4(7.7) mm; blades 12-60 cm long, 2-12 mm wide, flat, mostly glabrous, a few long hairs near the base of the adaxial surface. |
glabrous or pubescent; ligules 0.6-1.9 mm; blades to 38 cm long, 4-18 mm wide, flat, glabrous or pubescent, dark green. |
Panicles | terminal, with (4)10-30 racemosely arranged branches; branches 1.2-11.5 cm, divergent; branch axes 0.5-1.1 mm wide, winged, glabrous, margins scabrous, terminating in a spikelet. |
terminal, with 1-3(4) racemosely arranged branches; branches 2.3-13.4 cm, erect to divergent, terminating in a spikelet; branch axes 0.2-1 mm wide, glabrous, margins scabrous. |
Spikelets | 1.8-2.8 mm long, 1.1-1.5 mm wide, paired, appressed to the branch axes, elliptic to slightly obovate, stramineous (rarely purple). |
2.1-3.3 mm long, 1.3-1.6 mm wide, paired, imbricate, appressed to the branch axes, elliptic to obovate, stramineous to brown. |
Caryopses | 1.2-1.7 mm, white. |
1.3-1.5 mm, light to dark brown. |
Lower | glumes absent; upper glumes and lower lemmas 3-veined, margins pilose; upper florets stramineous. |
glumes 0.4-1.2(1.8) mm, stramineous to brown; upper glumes with papillose-based short pubescence, 3- or 5-veined, margins entire, lower lemmas with papillose-based short pubescence, lacking ribs over the veins, 3-veined, margins entire; upper florets light stramineous. |
2n | = 40. |
= 40, 60. |
Paspalum urvillei |
Paspalum langei |
|
Distribution |
AL; AR; CA; FL; GA; KS; KY; LA; MO; MS; NC; OK; SC; TN; TX; VA; HI; PR
|
FL; LA; OK; TX |
Discussion | Paspalum urvillei has been introduced to the United States from South America. In the Flora region it grows in disturbed, moist to wet areas, primarily in the southeastern United States. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Paspalum langei is native from Texas to Florida, and extends through Mexico to Venezuela and the Antilles. It grows at the edges of moist woods and in disturbed areas. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25. | FNA vol. 25, p. 588. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Name authority | Steud. | (E. Fourn.) Nash |
Web links |