Paspalum vaginatum |
Paspalum floridanum |
|
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saltwater couch, seashore paspalum |
Florida paspalum |
|
Habit | Plants perennial; rhizomatous and/or stoloniferous. | Plants perennial; rhizomatous. |
Culms | 10-79 cm, erect; nodes glabrous. |
80-210 cm, erect; nodes glabrous or pubescent. |
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 or pubescent; ligules 1.2-3.3 mm; blades to 52 cm long, 3-18 mm wide, flat, glabrous or pubescent, usually densely pubescent behind the ligules. |
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 1-6 racemosely arranged branches; branches 3-17.9 cm, divergent to erect, terminating in a spikelet; branch axes 0.3-1.8 mm wide, glabrous, the margins 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. |
2.9-4.1 mm long, 1.9-3.1 mm wide, paired, imbricate, appressed to the branch axes, elliptic to suborbicular to orbicular, glabrous, stramineous. |
Lower glumes | absent (rarely present); upper glumes and lower lemmas glabrous, 3-veined; upper florets white. |
absent; upper glumes glabrous, 5-veined, margins entire; lower lemmas glabrous, lacking ribs over the veins, 3-veined, margins entire; upper florets golden brown. |
Caryopses | 2.8-3.1 mm, yellow. |
2.8 mm, amber. |
2n | = 20, 40, 60. |
= 120, 140, ca. 160-170. |
Paspalum vaginatum |
Paspalum floridanum |
|
Distribution |
AL; CA; FL; GA; LA; MS; NC; SC; TX; HI; PR; Virgin Islands
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AL; AR; DC; DE; FL; GA; IL; IN; KS; KY; LA; MD; MO; MS; NC; NJ; OH; OK; PA; SC; TN; TX; VA
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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 floridanum grows along the edges of forests, flatwoods, and pinewoods and in open areas. It is a frequent component of dry-mesic soils in longleaf pine-oak-grass ecosystems, and is restricted to the eastern United States. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25. | FNA vol. 25, p. 599. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Synonyms | P. longicilium, P. floridanum var. glabratum, P. difforme | |
Name authority | Sw. | Michx. |
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