Paspalum praecox |
Paspalum pleostachyum |
|
---|---|---|
early paspalum |
tropical paspalum |
|
Habit | Plants perennial; shortly rhizomatous. | Plants perennial; cespitose. |
Culms | 5-160 cm, erect, not rooting at the lower nodes; nodes glabrous. |
80-110 cm, erect; nodes glabrous. |
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, sparsely pubescent apically; ligules 1-2.9 mm; blades to 62 cm long, 3-7 mm wide, mostly involute, pubescent above, glabrous below. |
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 3-15 racemosely arranged branches; branches 5.2-12.5 cm, divergent to spreading, terminating in a spikelet; branch axes 0.3-0.8 mm wide, very narrowly winged, scabrous. |
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. |
2.2-2.5 mm long, 1-1.3 mm wide, paired, appressed to the branch axes, elliptic to obovate, white to light stramineous. |
Caryopses | 1.9-2.1 mm, brown. |
1-1.6 mm, suborbicular, brown. |
Lower | glumes absent; upper glumes and lower lemmas glabrous, 3-veined, margins entire; upper florets white to light yellow. |
glumes absent; upper glumes glabrous, 5-veined; lower lemmas glabrous, 3-veined; upper florets 1.4-2 mm, white to stramineous. |
2n | = 20, 40. |
= unknown. |
Paspalum praecox |
Paspalum pleostachyum |
|
Distribution |
AL; AR; FL; GA; IL; LA; MS; NC; SC; TX; VA
|
FL; PR |
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 pleostachyum grows in sandy soil or rocky areas in Florida, the West Indies, and from northern South America to Brazil. It is usually found along the coast. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 597. | FNA vol. 25. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Synonyms | P. praecox var. curtisianum, P. lentiferum | |
Name authority | Walter | Doll |
Web links |