Paspalum repens |
Paspalum fimbriatum |
|
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water paspalum |
Panama crowngrass, wing paspalum |
|
Habit | Plants annual; aquatic, floating or rhizomatous. | Plants annual. |
Culms | 4-55 cm, erect; nodes pubescent. |
15-70 cm, erect; nodes glabrous or pubescent. |
Sheaths | glabrous or pubescent; ligules 1-4 mm; blades 10-40 cm long, 8-22 mm wide, flat, glabrous or sparsely pubescent. |
pubescent, sometimes sparsely so; ligules 1-1.9 mm; blades to 35 cm long, 1.9-16.2 mm wide, flat, sparsely pubescent on both surfaces, margins ciliate basally. |
Panicles | 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. |
terminal, with 2-8 racemosely arranged branches; branches 2-6.4 cm, diverging to erect; branch axes 0.9-1.6 mm wide, winged, glabrous, margins scabrous, terminating in a spikelet. |
Spikelets | 1.1-1.9 mm long, 0.5-0.8 mm wide, solitary, appressed to the branch axes, elliptic, pubescent, white. |
2.5-3.5 mm long, 2.4-3 mm wide, paired, appressed to the branch axes, suborbicular, stramineous. |
Lower glumes | absent; upper glumes and lower lemmas veinless; upper florets white. |
absent; upper glumes and lower lemmas 1.9-2.1 mm, ovate, winged, 1-veined, margins ciliate-lacerate; upper florets 1.7-1.9 mm, stramineous. |
Caryopses | 0.8-0.9 mm, translucent, white. |
0.9-1.1 mm, orbicular, white. |
2n | = 20. |
= 20. |
Paspalum repens |
Paspalum fimbriatum |
|
Distribution |
FL; HI; PR; Virgin Islands |
|
Discussion | 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.) |
Paspalum fimbriatum has probably been introduced into the United States. Its primary range extends from southern Mexico to Colombia, Venezuela, and French Guiana. In the Flora region, it grows in disturbed areas of Florida. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 571. | FNA vol. 25, p. 577. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Synonyms | P. repens var. fluitans, P. fluitans | |
Name authority | P.J. Bergius | Kunth |
Web links |