Paspalum dilatatum |
Paspalum dissectum |
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Dallis grass, sticky heads |
mudbank crowngrass, mudbank paspalum |
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Habit | Plants perennial; cespitose, rhizomatous, rhizomes short (less than 1 cm), forming a knotty base. | Plants perennial; rhizomatous. |
Culms | 50-175 cm, erect; nodes glabrous. |
10-50 cm, decumbent; 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; ligules 2-2.5 mm; blades to 12 cm long, 1.3-4.8 mm wide, flat. |
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 2-6 racemosely arranged branches; branches 1.3-5.3 cm, diverging to erect, often arcuate, persistent; branch axes 1.8-3 mm wide, broadly winged, usually conduplicate, 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). |
1.7-2.1 mm long, 1.1-1.4 mm wide, solitary, appressed to the branch axes, elliptic to ovate, glabrous, stramineous. |
Lower glumes | absent; upper glumes and lower lemmas 5-7-veined, margins pilose; upper florets stramineous. |
absent; upper glumes and lower lemmas 5-veined; upper florets stramineous, lemmas glabrous throughout. |
Caryopses | 2-2.3 mm, white to brown. |
1-1.3 mm, white. |
2n | = 20, 40, 50-63. |
= 40, 60. |
Paspalum dilatatum |
Paspalum dissectum |
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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; DC; DE; FL; GA; IL; KS; KY; LA; MD; MO; MS; NC; NJ; OK; SC; TN; TX; VA
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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 dissectum grows at the edges of lakes, ponds, rice fields, and wet roadside ditches. It is native to the eastern portion of the contiguous United States and to Cuba. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 579. | FNA vol. 25, p. 572. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Name authority | Poir. | (L.) L. |
Web links |
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