Paspalum laxum

Lam.
Common names: Coconut paspalum
Treatment appears in FNA Volume 25. Treatment on page 592.

Plants perennial; cespitose to short rhizomatous. Culms 80-110 cm, erect; nodes glabrous. Sheaths 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, 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 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; 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. 2n = 60.

Distribution

Puerto Rico, Virgin Islands, Fla.

Discussion

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.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Paspalum laxum"
rounded +
anatomy +  and kranz +
Charles M. Allen +  and David W. Hall +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
9 cm90 mm <br />0.09 m <br /> (41 cm410 mm <br />0.41 m <br />) +
glabrous +  and pubescent +
usually linear +  and lanceolate occasionally ovate +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
divergent +  and arranged +
0.4mm +  and 0.7mm +
spikelike +
1.9 cm19 mm <br />0.019 m <br /> (11.4 cm114 mm <br />0.114 m <br />) +
not developed +
ringlike +
brown +, yellow +  and white +
orbicular +  and elliptical planoconvex or flattened +
sometimes longer +
Coconut paspalum +
branched +  and solid +
80 cm800 mm <br />0.8 m <br /> (110 cm1,100 mm <br />1.1 m <br />) +
Puerto Rico +, Virgin Islands +  and Fla. +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
bracteate +  and ebracteate +
solid +  and hollow +
cauline +  and basal +
coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.29 cm2.9 mm <br />0.0029 m <br />) +
membranous +
inconspicuous +
pubescent +  and glabrous +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
spreading +  and erect +
dry +  and fleshy +
pubescent +  and glabrous +
subsessile +  and shortly pedicellate +
imbricate +  and paired +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
1 +  and 60 +
unisexual +  and bisexual +
elliptic-obovate +  and ovate +
1.1mm +  and 1.3mm +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Gramineae +
Paspalum laxum +
Paspalum +
species +
membranous +
stipitate +  and sessile +
rounded +  and acute +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
stramineous +  and dark-brown +
smooth +  and slightly rugose +
smooth +  and slightly rugose +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +