Paspalum setaceum var. muhlenbergii

(Nash) D.J.
Common names: Hurrahgrass
Endemic
Synonyms: Paspalum ciliatifolium var. muhlenbergii Paspalum pubescens
Treatment appears in FNA Volume 25. Treatment on page 590.

Plants mostly erect. Leaves mostly cauline; blades to 25 cm long, 2-10.2 mm wide, lax to straight, surfaces and margins evenly hirsute, hairs 1.5-5.5 mm, light to dark green. Panicle branches 1.9-14.3 cm; branch axes 0.5-1 mm wide. Spikelets 1.8-2.5 mm long, 1.5-2 mm wide, oval to suborbicular, glabrous or with a few hairs, light green to green; lower lemmas usually with an evident midvein; upper florets 1.8-2.3 mm.

Discussion

Paspalum setaceum var. muhlenbergii is endemic to the Flora region, extending from southern Ontario to the Gulf coast of Texas and northern Florida. It grows in disturbed areas and on the margins of forests. It resembles var. supinum, differing in its erect habit and, usually, in its spikelet shape and presence 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 +
(Nash) D.J. +
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 /> (25 cm250 mm <br />0.25 m <br />) +
pubescent +  and glabrous +
usually linear +  and lanceolate occasionally ovate +
2mm;10.2mm +
17 cm170 mm <br />0.17 m <br /> (?) +
0.5mm +  and 1mm +
ascending;spreading +
spikelike +
not developed +
ringlike +
elliptic +  and suborbicular +
sometimes longer +
Hurrahgrass +
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 +
light +  and dark green +
uncinate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.55 cm5.5 mm <br />0.0055 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 +
1.9 cm19 mm <br />0.019 m <br /> (14.3 cm143 mm <br />0.143 m <br />) +
subterranean +
spreading +  and erect +
dry +  and fleshy +
pubescent +  and glabrous +
subsessile +  and shortly pedicellate +
imbricate +  and paired +
light green +  and green +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
with a few hairs +  and glabrous +
1 +  and 60 +
unisexual +  and bisexual +
oval +  and suborbicular +
1.5mm +  and 2mm +
1 (?) +  and 3 (?) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
Paspalum ciliatifolium var. muhlenbergii +  and Paspalum pubescens +
Paspalum setaceum var. muhlenbergii +
Paspalum setaceum +
variety +
membranous +
stipitate +  and sessile +
rounded +  and acute +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.23 cm2.3 mm <br />0.0023 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 +