Paspalum dilatatum |
Paspalum urvillei |
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Dallis grass, sticky heads |
Vasey grass, Vasey's grass |
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Habit | Plants perennial; cespitose, rhizomatous, rhizomes short (less than 1 cm), forming a knotty base. | Plants perennial; cespitose, with a knotty base composed of very short (less than 1 cm) rhizomes. |
Culms | 50-175 cm, erect; nodes glabrous. |
50-220 cm, erect; nodes glabrous or pubescent. |
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 or pubescent; ligules 1-4(7.7) mm; blades 12-60 cm long, 2-12 mm wide, flat, mostly glabrous, a few long hairs near the base of the adaxial surface. |
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 (4)10-30 racemosely arranged branches; branches 1.2-11.5 cm, divergent; branch axes 0.5-1.1 mm wide, winged, glabrous, margins scabrous, terminating in a spikelet. |
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). |
1.8-2.8 mm long, 1.1-1.5 mm wide, paired, appressed to the branch axes, elliptic to slightly obovate, stramineous (rarely purple). |
Lower glumes | absent; upper glumes and lower lemmas 5-7-veined, margins pilose; upper florets stramineous. |
absent; upper glumes and lower lemmas 3-veined, margins pilose; upper florets stramineous. |
Caryopses | 2-2.3 mm, white to brown. |
1.2-1.7 mm, white. |
2n | = 20, 40, 50-63. |
= 40. |
Paspalum dilatatum |
Paspalum urvillei |
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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
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AL; AR; CA; FL; GA; KS; KY; LA; MO; MS; NC; OK; SC; TN; TX; VA; HI; PR
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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 urvillei has been introduced to the United States from South America. In the Flora region it grows in disturbed, moist to wet areas, primarily in the southeastern United States. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 579. | FNA vol. 25. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Poir. | Steud. |
Web links |
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