Paspalum setaceum var. supinum

(Bosc ex Poir.) Trin.
Common names: Supine thin paspalum
Endemic
Synonyms: Paspalum supinum
Treatment appears in FNA Volume 25. Treatment on page 592.

Plants usually spreading. Leaves mostly cauline; blades to 31 cm long, 2.2-19 mm wide, lax to straight, long-pubescent, hairs 1.5-4 mm, yellow-green, margins ciliate, with long stiff hairs. Panicle branches 2.2-9.9 cm; branch axes 0.6-1.5 mm wide. Spikelets 1.7-2.1 mm long, 1.2-1.6 mm wide, elliptic to obovate (rarely suborbicular), glabrous or pubescent; lower lemmas with or without an evident midvein; upper florets 1.7-2.1 mm.

Discussion

Paspalum setaceum var. supinum grows at the edges of forests and in disturbed areas. Within the Flora region, its range extends from Texas, Arkansas, and Louisana to South Carolina, Georgia, and Florida.

Paspalum setaceum var. supinum resembles var. muhlenbergii, differing in its spreading habit and, usually, in its spikelet shape and lack of a midvein on the lower lemma.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number."elongated" is not a number.

anatomy +  and kranz +
Charles M. Allen +  and David W. Hall +
(Bosc ex Poir.) Trin. +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
straight +
0 cm0 mm <br />0 m <br /> (31 cm310 mm <br />0.31 m <br />) +
long-pubescent +
usually linear +  and lanceolate occasionally ovate +
2.2mm;19mm +
17 cm170 mm <br />0.17 m <br /> (?) +
0.6mm +  and 1.5mm +
ascending;spreading +
spikelike +
not developed +
ringlike +
elliptic +  and suborbicular +
sometimes longer +
Supine 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 +
yellow-green +
uncinate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
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 +
2.2 cm22 mm <br />0.022 m <br /> (9.9 cm99 mm <br />0.099 m <br />) +
subterranean +
spreading +  and erect +
dry +  and fleshy +
pubescent +  and glabrous +
subsessile +  and shortly pedicellate +
imbricate +  and paired +
brown +  and stramineous +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
pubescent +  and glabrous +
1 +  and 60 +
unisexual +  and bisexual +
elliptic +  and obovate +
1.2mm +  and 1.6mm +
1 (?) +  and 3 (?) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
Paspalum supinum +
Paspalum setaceum var. supinum +
Paspalum setaceum +
variety +
membranous +
stipitate +  and sessile +
rounded +  and acute +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
glandular-pubescent +  and glabrous +
stramineous +  and dark-brown +
smooth +  and slightly rugose +
glandular-pubescent +  and glabrous +
smooth +  and slightly rugose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +