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saltwater couch, seashore paspalum

Habit Plants perennial; rhizomatous and/or stoloniferous.
Culms

10-79 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.

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.

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.

Caryopses

2.8-3.1 mm, yellow.

Lower

glumes absent (rarely present);

upper glumes and lower lemmas glabrous, 3-veined;

upper florets white.

2n

= 20, 40, 60.

Paspalum vaginatum

Distribution
from FNA
AL; CA; FL; GA; LA; MS; NC; SC; TX; HI; PR; Virgin Islands
[WildflowerSearch map]
[BONAP county map]
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.)

Source FNA vol. 25.
Parent taxa Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum
Sibling taxa
P. acuminatum, P. almum, P. bifidum, P. blodgettii, P. boscianum, P. caespitosum, P. conjugatum, P. conspersum, P. convexum, P. coryphaeum, P. dilatatum, P. dissectum, P. distichum, P. fimbriatum, P. floridanum, P. hartwegianum, P. intermedium, P. laeve, P. langei, P. laxum, P. lividum, P. malacophyllum, P. minus, P. modestum, P. monostachyum, P. nicorae, P. notatum, P. paniculatum, P. pleostachyum, P. plicatulum, P. praecox, P. pubiflorum, P. quadrifarium, P. racemosum, P. repens, P. scrobiculatum, P. setaceum, P. unispicatum, P. urvillei, P. virgatum, P. virletii, P. wrightii
Name authority Sw.
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