Paspalum vaginatum |
Paspalum laxum |
|
---|---|---|
saltwater couch, seashore paspalum |
coconut paspalum |
|
Habit | Plants perennial; rhizomatous and/or stoloniferous. | Plants perennial; cespitose to short rhizomatous. |
Culms | 10-79 cm, erect; nodes glabrous. |
80-110 cm, erect; nodes glabrous. |
Sheaths | glabrous, sparsely long pubescent distally; ligules 1-2 mm; blades 10-19 cm long, 1.4-8 mm wide, flat or conduplicate, glabrous or pubescent, apices involute. |
glabrous, sparsely pubescent apically; ligules 1-2.9 mm; blades 9-41 cm long, 3-7 mm wide, mostly involute, pubescent above, glabrous below. |
Panicles | terminal, usually composed of a digitate pair of branches, a third branch sometimes present below; branches 1.1-7.9 cm, diverging to erect; branch axes 0.4-1.4 mm wide, winged, glabrous, margins scabrous, terminating in a spikelet. |
terminal, with 1-5(10) racemosely arranged branches; branches 1.9-11.4 cm, erect to divergent, terminating in a spikelet; branch axes 0.4-0.7 mm wide, very narrowly winged, scabrous. |
Spikelets | 3-4.5 mm long, 1.1-2 mm wide, solitary, appressed to the branch axes, elliptic-lanceolate, glabrous, light stramineous, apices acute to acuminate. |
1.6-2.2 mm long, 1.1-1.3 mm wide, paired, imbricate, appressed to the branch axes, elliptic-obovate to ovate. |
Lower glumes | absent (rarely present); upper glumes and lower lemmas glabrous, 3-veined; upper florets white. |
absent; upper glumes shortly pubescent, 5-veined, margins entire; lower lemmas glabrous or shortly pubescent, lacking ribs over the veins, 3-veined, margins entire; upper florets 1.4-2 mm, white to stramineous. |
Caryopses | 2.8-3.1 mm, yellow. |
|
2n | = 20, 40, 60. |
= 60. |
Paspalum vaginatum |
Paspalum laxum |
|
Distribution |
AL; CA; FL; GA; LA; MS; NC; SC; TX; HI; PR; Virgin Islands
|
FL; PR; Virgin Islands |
Discussion | Paspalum vaginatum grows in brackish and salt marshes. It is native to warm, coastal regions around the world, including the Americas. It has been grown for turf and in lawn trials, but is not yet widely used for these purposes. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Paspalum laxum grows in hammocks and along roads, often in sandy or limestone soils. It used to be common in coconut groves, hence the English-language name. It grows in southern Florida, the Antilles, and Belize. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25. | FNA vol. 25, p. 592. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Name authority | Sw. | Lam. |
Web links |