Paspalum conjugatum |
Paspalum lividum |
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herbe creole, Hilo grass, muhsrasre, rehn wei, sour grass, sour paspalum, ti grass |
longtom |
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Habit | Plants perennial; stoloniferous. | Plants perennial; decumbent or cespitose. |
Culms | 15-80 cm, erect; nodes glabrous. |
30-97 cm, erect; nodes glabrous. |
Sheaths | glabrous, pubescent distally; ligules 0.5-0.8 mm; blades 7-23 cm long, 1.5-8 mm wide, flat. |
glabrous or pubescent; ligules 2.2-4.7 mm; blades to 38 cm long, 2.3-6.2 mm wide, flat, glabrous or pubescent. |
Panicles | terminal, usually composed of a pair of branches, a third branch sometimes present below the terminal pair; branches 2.5-12.7 cm, diverging to spreading, often arcuate, persistent; branch axes 0.2-0.8 mm wide, glabrous, margins scabrous, terminating in a reduced spikelet. |
terminal, with 3-11 racemosely arranged branches; branches 1.5-4 cm, divergent, occasionally arcuate, terminating in a spikelet; branch axes 1.5-2 mm wide, broadly winged, glabrous or sparsely pubescent, margins scabrous, usually slightly conduplicate, occasionally purple. |
Spikelets | 1.3-1.9 mm long, 0.8-1.1 mm wide, solitary, appressed to the branch axes, ovate, stramineous. |
2.2-2.6 mm long, 1.2-1.5 mm wide, paired, imbricate, appressed to divergent from the branch axes, elliptic to obovate, stramineous (rarely purple-spotted), margins scabrous apically. |
Lower glumes | absent; upper glumes pilose on the margins, veinless or 2-3-veined; lower lemmas glabrous, veinless or 2-3-veined; upper florets whitish to golden yellow. |
absent; upper glumes and lower lemmas glabrous, 5-veined, margins entire; lower lemmas lacking ribs over the veins; upper florets white to pale. |
Caryopses | 0.9-1.1 mm, white to yellow. |
2-2.2 mm, brown. |
2n | = 18, 20, 40, 80. |
= 40, 60. |
Paspalum conjugatum |
Paspalum lividum |
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Distribution |
AL; FL; LA; MS; TX; UT; HI; PR; Virgin Islands
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Discussion | Paspalum conjugatum is native to tropical and subtropical regions of both the Western and Eastern hemispheres, including the Flora region. It grows in disturbed areas and at the edges of forests, and is sometimes used as a lawn grass. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Paspalum lividum grows in fresh and brackish marshes and ditches. It is native from the Gulf coast of the United States southward through Mexico and Central America to Cuba and Argentina. Plants of P. modestum with pale upper florets may be mistaken for P. lividum, but will have ligules that are only 1-2.3 mm long. Zuloaga and Morrone regard Paspalum lividum as a synonym of P. denticulatum Trin. (http://mobot.mobot.org/W3T/SearclVnwgc.html December 9, 2002). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 572. | FNA vol. 25, p. 597. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Name authority | P.J. Bergius | Trin. ex Schltdl. |
Web links |