Paspalum urvillei |
Paspalum conjugatum |
|
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Vasey grass, Vasey's grass |
herbe creole, Hilo grass, muhsrasre, rehn wei, sour grass, sour paspalum, ti grass |
|
Habit | Plants perennial; cespitose, with a knotty base composed of very short (less than 1 cm) rhizomes. | Plants perennial; stoloniferous. |
Culms | 50-220 cm, erect; nodes glabrous or pubescent. |
15-80 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, pubescent distally; ligules 0.5-0.8 mm; blades 7-23 cm long, 1.5-8 mm wide, flat. |
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, usually composed of a pair of branches, a third branch sometimes present below the terminal pair; branches 2.5-12.7 cm, diverging to spreading, often arcuate, persistent; branch axes 0.2-0.8 mm wide, glabrous, margins scabrous, terminating in a reduced spikelet. |
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). |
1.3-1.9 mm long, 0.8-1.1 mm wide, solitary, appressed to the branch axes, ovate, stramineous. |
Caryopses | 1.2-1.7 mm, white. |
0.9-1.1 mm, white to yellow. |
Lower | glumes absent; upper glumes and lower lemmas 3-veined, margins pilose; upper florets stramineous. |
glumes absent; upper glumes pilose on the margins, veinless or 2-3-veined; lower lemmas glabrous, veinless or 2-3-veined; upper florets whitish to golden yellow. |
2n | = 40. |
= 18, 20, 40, 80. |
Paspalum urvillei |
Paspalum conjugatum |
|
Distribution |
AL; AR; CA; FL; GA; KS; KY; LA; MO; MS; NC; OK; SC; TN; TX; VA; HI; PR
|
AL; FL; LA; MS; TX; UT; HI; PR; Virgin Islands
|
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 conjugatum is native to tropical and subtropical regions of both the Western and Eastern hemispheres, including the Flora region. It grows in disturbed areas and at the edges of forests, and is sometimes used as a lawn grass. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25. | FNA vol. 25, p. 572. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Name authority | Steud. | P.J. Bergius |
Web links |