Paspalum repens

P.J. Bergius
Common names: Water paspalum
Synonyms: Paspalum repens var. fluitans Paspalum fluitans
Treatment appears in FNA Volume 25. Treatment on page 571.

Plants annual; aquatic, floating or rhizomatous. Culms 4-55 cm, erect; nodes pubescent. Sheaths glabrous or pubescent; ligules 1-4 mm; blades 10-40 cm long, 8-22 mm wide, flat, glabrous or sparsely pubescent. Panicles terminal, with (7) 20-70 racemosely arranged branches; branches 1.2-9.5 cm, diverging to spreading, occasion¬ally arcuate, disarticulating at maturity; branch axes 0.7-1.5 mm wide, broadly winged, glabrous, margins scabrous, extending beyond the distal spikelet. Spikelets 1.1-1.9 mm long, 0.5-0.8 mm wide, solitary, appressed to the branch axes, elliptic, pubescent, white. Lower glumes absent; upper glumes and lower lemmas veinless; upper florets white. Caryopses 0.8-0.9 mm, translucent, white. 2n = 20.

Discussion

Paspalum repens is a native species that grows along the edges of lakes, streams, and roadside ditches in the southeastern United States. Its range extends through tropical America to Peru, Bolivia, and Argentina.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Paspalum repens"
rounded +
anatomy +  and kranz +
Charles M. Allen +  and David W. Hall +
P.J. Bergius +
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 +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
pubescent +  and glabrous +
usually linear +  and lanceolate occasionally ovate +
0.8 cm8 mm <br />0.008 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
disarticulating +
0.7mm +  and 1.5mm +
diverging;spreading +
spikelike +
1.2 cm12 mm <br />0.012 m <br /> (9.5 cm95 mm <br />0.095 m <br />) +
not developed +
ringlike +
orbicular +  and elliptical planoconvex or flattened +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
sometimes longer +
Water paspalum +
branched +  and solid +
4 cm40 mm <br />0.04 m <br /> (55 cm550 mm <br />0.55 m <br />) +
Conn. +, N.J. +, N.Y. +, Wash. +, Va. +, Del. +, D.C +, Wis. +, W.Va. +, Pacific Islands (Hawaii) +, Ont. +, Fla. +, N.H. +, Tenn. +, N.Mex. +, Tex. +, La. +, Ala. +, Ark. +, Miss. +, Okla. +, Puerto Rico +, S.C. +, Virgin Islands +, N.C. +, Pa. +, Mass. +, R.I. +, Vt. +, Nev. +, Colo. +, Md. +, Ga. +, Utah +, Calif. +, Ill. +, Ind. +, Iowa +, Kans. +, Ariz. +, Idaho +, Nebr. +, Oreg. +, Ohio +, Mo. +, Minn. +, Mich. +, Mont. +, Ky. +  and S.Dak. +
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 /> (0.4 cm4 mm <br />0.004 m <br />) +
membranous +
inconspicuous +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
spreading +  and erect +
dry +  and fleshy +
pubescent +  and glabrous +
subsessile +  and shortly pedicellate +
paired +  and not solitary +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
1 +  and 60 +
unisexual +  and bisexual +
compressed +, rounded +  and acuminate +
0.5mm +  and 0.8mm +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Paspalum repens var. fluitans +  and Paspalum fluitans +
Paspalum repens +
Paspalum +
species +
membranous +
stipitate +  and sessile +
rounded +  and acute +
stramineous +  and dark-brown +
smooth +  and slightly rugose +
smooth +  and slightly rugose +
dioecious +, monoecious +  and synoecious +