Paspalum praecox |
Paspalum repens |
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early paspalum |
water paspalum |
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Habit | Plants perennial; shortly rhizomatous. | Plants annual; aquatic, floating or rhizomatous. |
Culms | 5-160 cm, erect, not rooting at the lower nodes; nodes glabrous. |
4-55 cm, erect; nodes pubescent. |
Sheaths | densely pubescent, occasionally glabrous; ligules 1-2.2 mm; blades to 55 cm long, 2.2-8.3 mm wide, conduplicate (occasionally flat), glabrous below, pubescent above. |
glabrous or pubescent; ligules 1-4 mm; blades 10-40 cm long, 8-22 mm wide, flat, glabrous or sparsely pubescent. |
Panicles | terminal, with 2-10 racemosely arranged branches; branches 0.8-10.3 cm, divergent to spreading, often arcuate, terminating in a spikelet; branch axes 0.8-2 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 | 2.1-3.1 mm long, 2-2.8 mm wide, paired, imbricate, appressed to divergent from the branch axes, orbicular to suborbicular, stramineous. |
1.1-1.9 mm long, 0.5-0.8 mm wide, solitary, appressed to the branch axes, elliptic, pubescent, white. |
Caryopses | 1.9-2.1 mm, brown. |
0.8-0.9 mm, translucent, white. |
Lower | glumes absent; upper glumes and lower lemmas glabrous, 3-veined, margins entire; upper florets white to light yellow. |
glumes absent; upper glumes and lower lemmas veinless; upper florets white. |
2n | = 20, 40. |
= 20. |
Paspalum praecox |
Paspalum repens |
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Distribution |
AL; AR; FL; GA; IL; LA; MS; NC; SC; TX; VA
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Discussion | Paspalum praecox grows in pitcher plant bogs, wet pine flatwoods, wet savannahs, prairies, and wet streamhead ecotones. It is restricted to the United States, growing predominantly on the southeastern coastal plain. (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. praecox var. curtisianum, P. lentiferum | P. repens var. fluitans, P. fluitans |
Name authority | Walter | P.J. Bergius |
Web links |