Paspalum quadrifarium |
Paspalum intermedium |
|
---|---|---|
paja colorada, paja manse, tussock paspalum |
intermediate paspalum |
|
Habit | Plants perennial; cespitose. | Plants perennial; shortly rhizomatous. |
Culms | (50)100-180 cm, erect; nodes pubescent. |
to 200 cm, erect; nodes glabrous. |
Sheaths | pubescent, margins extending into auricles; ligules 1-6.3 mm; blades 15-62 cm long, 4.9-6.1 mm wide, involute to flat, glabrous. |
glabrous; ligules 2-3 mm; blades to 57 cm long, 2-3 cm wide, flat, glabrous below, appressed pubescent above. |
Panicles | terminal, with 15-44 racemosely arranged branches; branches 1.2-8.5 cm, straight, erect to ascending, lower branches longer than those above; branch axes 0.5-0.6 mm wide, narrowly winged, glabrous, margins scabrous, pubescent, terminating in a spikelet. |
terminal, with 60-100 racemosely arranged branches; branches 1-13 cm, divergent to spreading, often arcuate; branch axes 0.9-1.2 mm wide, winged, margins scabrous, long pubescent. |
Spikelets | 2-2.5(3) mm long, 0.9-1.3 mm wide, paired, divergent to spreading from the branch axes, elliptic, brown to stramineous, often purple-tinged. |
2-2.4 mm long, 0.9-1.2 mm wide, paired, divergent to spreading from the branch axes, elliptic to ovate, glabrous or pubescent, stramineous, sometimes partially purple. |
Lower glumes | usually absent, if present, to 0.9 mm, triangular; upper glumes shortly pubescent, 3-veined, purple-spotted, margins entire; lower lemmas glabrous or pubescent, lacking ribs over the veins, 3-veined, margins entire; upper florets 2.2-2.5 mm, white. |
absent; upper glumes smooth, 3-veined, margins entire, sparsely short-pubescent, at least distally; lower lemmas smooth, lacking ribs over the veins, 3-veined, margins entire, glabrous or shortly pubescent; upper florets stramineous to white. |
Caryopses | 1.5-1.7 mm, golden brown. |
|
2n | = 20, 30, 40. |
= 20, 40. |
Paspalum quadrifarium |
Paspalum intermedium |
|
Distribution |
MS |
GA; LA |
Discussion | Paspalum quadrifarium is native to Uruguay, Paraguay, Brazil, and Argentina. It is grown as an ornamental in Florida, but has also become established in disturbed habitats of the southeastern United States. It is considered a noxious weed in New South Wales, Australia. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Paspalum intermedium is an introduced roadside weed in the Flora region. It is found in Mexico and South America, but not in Central America (Pohl and Davidse 1994). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25. | FNA vol. 25, p. 586. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Name authority | Lam. | Munro ex Morong & Britton |
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