Paspalum setaceum var. setaceum

Common names: Thin paspalum
Treatment appears in FNA Volume 25.

Plants erect. Leaves mostly cauline; blades to 22 cm long, 1.5-7 mm wide, lax to straight, conspicuously hirsute, usually with long stiff hairs and short soft hairs, grayish-green, margins hirsute. Panicle branches 2-11.2 cm; branch axes 0.3-0.9 mm wide. Spikelets 1.4-1.9 mm long, 1.1-1.6 mm wide, elliptic, obovate, orbicular, or suborbicular, pubescent to nearly glabrous; lower lemmas without an evident midvein; upper lemmas 1.3-2 mm.

Discussion

Paspalum setaceum var. setaceum grows in open areas and sandy soils, often at the edges of forests, primarily on the southeastern coastal plain of the United States, from southern New England to eastern Mexico, but extending inland to western Virginia, Missouri, and Arkansas. It also grows in Cuba.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

rounded +
anatomy +  and kranz +
Charles M. Allen +  and David W. Hall +
Michx. +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
grayish-green +
straight +
0 cm0 mm <br />0 m <br /> (22 cm220 mm <br />0.22 m <br />) +
usually linear +  and lanceolate occasionally ovate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
17 cm170 mm <br />0.17 m <br /> (?) +
0.3mm +  and 0.9mm +
ascending;spreading +
spikelike +
2 cm20 mm <br />0.02 m <br /> (12 cm120 mm <br />0.12 m <br />) +
not developed +
ringlike +
elliptic +  and suborbicular +
sometimes longer +
Thin paspalum +
branched +  and solid +
prostrate +, spreading +  and erect +
25 cm250 mm <br />0.25 m <br /> (110 cm1,100 mm <br />1.1 m <br />) +
Conn. +, N.J. +, N.Y. +, Va. +, Del. +, D.C. +, Wis. +, W.Va. +, Ont. +, Fla. +, N.H. +, N.Mex. +, Tex. +, La. +, Tenn. +, N.C. +, S.C. +, Pa. +, Mass. +, R.I. +, Vt. +, Puerto Rico +, Colo. +, Md. +, Ala. +, Ark. +, Ill. +, Ga. +, Ind. +, Iowa +, Ariz. +, Kans. +, Nebr. +, Okla. +, Ohio +, Mo. +, Minn. +, Mich. +, Mont. +, Miss. +, 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 +
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 +
complex +  and simple +
concealed +  and prominent +
pubescent +  and glabrous +
2 +  and 1 +
2 cm20 mm <br />0.02 m <br /> (11.2 cm112 mm <br />0.112 m <br />) +
subterranean +
spreading +  and erect +
dry +  and fleshy +
pubescent +  and glabrous +
subsessile +  and shortly pedicellate +
imbricate +  and paired +
brown +  and stramineous +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
pubescent +  and nearly glabrous +
1 +  and 60 +
unisexual +  and bisexual +
suborbicular +, orbicular +, obovate +  and elliptic +
1.1mm +  and 1.6mm +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Gramineae +
Paspalum setaceum var. setaceum +
Paspalum setaceum +
variety +
membranous +
stipitate +  and sessile +
rounded +  and acute +
glandular-pubescent +  and glabrous +
stramineous +  and dark-brown +
smooth +  and slightly rugose +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
glandular-pubescent +  and glabrous +
smooth +  and slightly rugose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +