Paspalum urvillei |
Paspalum monostachyum |
|
---|---|---|
Vasey grass, Vasey's grass |
gulfdune paspalum |
|
Habit | Plants perennial; cespitose, with a knotty base composed of very short (less than 1 cm) rhizomes. | Plants perennial; rhizomatous. |
Culms | 50-220 cm, erect; nodes glabrous or pubescent. |
60-120 cm, erect; nodes glabrous. |
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; ligules 0.5-3 mm; blades to 50 cm long, 0.2-2(8) mm wide, involute (rarely flat), glabrous, pubescent behind the ligules. |
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 racemosely arranged branches; branches 5.6-23.3 cm, erect (rarely divergent), terminating in a spikelet; branch axes 0.5-1.2 mm wide, glabrous, margins scabrous to pubescent. |
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). |
2.3-3.7 mm long, 1.3-1.9 mm wide, paired, imbricate, appressed to the branch axes, elliptic to narrowly ovate, glabrous, stramineous (rarely partially purple). |
Caryopses | 1.2-1.7 mm, white. |
2-2.4 mm, yellow to golden brown. |
Lower | glumes absent; upper glumes and lower lemmas 3-veined, margins pilose; upper florets stramineous. |
glumes usually absent; upper glumes glabrous, 1-veined, margins entire; lower lemmas glabrous, lacking ribs over the veins, 3-veined, margins entire; upper florets stramineous. |
2n | = 40. |
= unknown. |
Paspalum urvillei |
Paspalum monostachyum |
|
Distribution |
AL; AR; CA; FL; GA; KS; KY; LA; MO; MS; NC; OK; SC; TN; TX; VA; HI; PR
|
FL; LA; MS; 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 monostachyum grows in sand and muck soils on coastal sand dunes, wet prairie, marshes, and disturbed habitats of the southern coastal plain from Florida to eastern Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25. | FNA vol. 25, p. 594. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Name authority | Steud. | Vasey |
Web links |