Paspalum paniculatum

L.
Common names: Arrocillo
Introduced
Treatment appears in FNA Volume 25. Treatment on page 577.

Plants perennial; cespitose or rhizomatous. Culms to 100 cm, erect; nodes pubescent. Sheaths pubescent; ligules 0.2-0.5 mm; blades 12-35 cm long, 10-24 mm wide, flat, scabrous, pubescent near the margins, margins usually undulate. Panicles terminal, with 18-50 racemosely arranged branches; branches 0.8-8.9 cm, spreading to diverging, often arcuate; branch axes 0.2-0.5 mm wide, narrowly winged, scabrous, terminating in a spikelet. Spikelets 1.1-1.3 mm long, 0.9-1 mm wide, paired, diverging from the branch axes, ovate, light-brown to stramineous. Lower glumes absent; upper glumes and lower lemmas pubescent, 3-veined; upper florets 1.1-1.3 mm, stramineous. Caryopses 0.7-0.8 mm, light-brown. 2n = 20, 40, 60.

Distribution

Puerto Rico, Virgin Islands, Pacific Islands (Hawaii), Miss.

Discussion

Paspalum paniculatum is native from Mexico and the West Indies to Argentina. It is now established in Mississippi and southern Florida, growing in disturbed areas.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Paspalum paniculatum"
60 +, 40 +  and 20 +
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 +
12 cm120 mm <br />0.12 m <br /> (35 cm350 mm <br />0.35 m <br />) +
usually linear +  and lanceolate occasionally ovate +
1 cm10 mm <br />0.01 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
0.2mm +  and 0.5mm +
spreading;diverging +
spikelike +
0.8 cm8 mm <br />0.008 m <br /> (8.9 cm89 mm <br />0.089 m <br />) +
not developed +
ringlike +
orbicular +  and elliptical planoconvex or flattened +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
sometimes longer +
Arrocillo +
branched +  and solid +
0 cm0 mm <br />0 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Puerto Rico +, Virgin Islands +, Pacific Islands (Hawaii) +  and Miss. +
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 +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
membranous +
inconspicuous +
undulate +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
spreading +  and erect +
dry +  and fleshy +
Introduced +
subsessile +  and shortly pedicellate +
light-brown +  and stramineous +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
1 +  and 60 +
unisexual +  and bisexual +
0.9mm +  and 1mm +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Gramineae +
Paspalum paniculatum +
Paspalum +
species +
membranous +
stipitate +  and sessile +
rounded +  and acute +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
stramineous +  and dark-brown +
smooth +  and slightly rugose +
smooth +  and slightly rugose +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +