Paspalum dilatatum |
Paspalum intermedium |
|
---|---|---|
Dallis grass, sticky heads |
intermediate paspalum |
|
Habit | Plants perennial; cespitose, rhizomatous, rhizomes short (less than 1 cm), forming a knotty base. | Plants perennial; shortly rhizomatous. |
Culms | 50-175 cm, erect; nodes glabrous. |
to 200 cm, erect; nodes glabrous. |
Sheaths | glabrous or pubescent, lower sheaths more frequently pubescent than the upper sheaths; ligules 1.5-3.8 mm; blades to 35 cm long, 2-16.5 mm wide, flat, mostly glabrous, adaxial surfaces with a few long hairs near the base. |
glabrous; ligules 2-3 mm; blades to 57 cm long, 2-3 cm wide, flat, glabrous below, appressed pubescent above. |
Panicles | terminal, with 2-7 racemosely arranged branches; branches 1.5-12 cm, racemose, divergent; branch axes 0.7-1.4 mm wide, winged, glabrous, margins scabrous, 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 | 2.3-4 mm long, 1.7-2.5 mm wide, paired, appressed to the branch axes, ovate, tapering to an acute apex, stramineous (rarely purple). |
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 | absent; upper glumes and lower lemmas 5-7-veined, margins pilose; upper florets stramineous. |
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 | 2-2.3 mm, white to brown. |
1.5-1.7 mm, golden brown. |
2n | = 20, 40, 50-63. |
= 20, 40. |
Paspalum dilatatum |
Paspalum intermedium |
|
Distribution |
AL; AR; AZ; CA; CO; DC; FL; GA; IL; KY; LA; MD; MO; MS; NC; NJ; NM; OK; OR; SC; TN; TX; VA; WV; HI; PR
|
GA; LA |
Discussion | Paspalum dilatatum is native to Brazil and Argentina. It is now well established in the Flora region, generally as a weed in waste places. It is also used as a turf grass. (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, p. 579. | FNA vol. 25, p. 586. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Name authority | Poir. | Munro ex Morong & Britton |
Web links |
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