Paspalum pubiflorum |
Paspalum repens |
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hairyseed paspalum |
water paspalum |
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Habit | Plants perennial; usually decumbent, rooting at the nodes. | Plants annual; aquatic, floating or rhizomatous. |
Culms | 30-130 cm, decumbent; nodes glabrous or pubescent. |
4-55 cm, erect; nodes pubescent. |
Sheaths | glabrous or pubescent; ligules 1-3.2 mm; blades to 31 cm long, 4-18 mm wide, flat, glabrous, with a few hairs behind the ligules. |
glabrous or pubescent; ligules 1-4 mm; blades 10-40 cm long, 8-22 mm wide, flat, glabrous or sparsely pubescent. |
Panicles | terminal, with 2-7 racemosely arranged branches; branches 2.2-7.9 cm, divergent to spreading, terminating in a spikelet; branch axes 1.1-2.3 mm wide, narrowly winged, glabrous, margins scabrous. |
terminal, with (7)20-70 racemosely arranged branches; branches 1.2-9.5 cm, diverging to spreading, occasionally arcuate, disarticulating at maturity; branch axes 0.7-1.5 mm wide, broadly winged, glabrous, margins scabrous, extending beyond the distal spikelet. |
Spikelets | 2.8-3.6 mm long, 1.5-2 mm wide, paired, imbricate, appressed to divergent from the branch axes, elliptic to obovate, pubescent or glabrous, light brown to stramineous. |
1.1-1.9 mm long, 0.5-0.8 mm wide, solitary, appressed to the branch axes, elliptic, pubescent, white. |
Lower glumes | absent; upper glumes and lower lemmas glabrous or sparsely pubescent, hairs shorter than 0.1 mm, 3-veined, margins entire; lower lemmas lacking ribs over the veins; upper florets stramineous. |
absent; upper glumes and lower lemmas veinless; upper florets white. |
Caryopses | 1.8-2 mm, golden brown or white. |
0.8-0.9 mm, translucent, white. |
2n | = 60, ca. 64. |
= 20. |
Paspalum pubiflorum |
Paspalum repens |
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Distribution |
AL; AR; CO; DC; FL; GA; IL; IN; KS; KY; LA; MD; MO; MS; NC; OH; OK; PA; SC; TN; TX; VA; WV
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Discussion | Paspalum pubiflorum grows on the edges of forests and in disturbed areas. It is native to the southeastern United States, Mexico, and Cuba. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Paspalum repens is a native species that grows along the edges of lakes, streams, and roadside ditches in the southeastern United States. Its range extends through tropical America to Peru, Bolivia, and Argentina. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 597. | FNA vol. 25, p. 571. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Synonyms | P. pubiflorum var. glabrum, P. geminum | P. repens var. fluitans, P. fluitans |
Name authority | Rupr. ex E. Fourn. | P.J. Bergius |
Web links |