Panicum rigidulum subsp. rigidulum

Synonyms: Panicum condensum Panicum agrostoides var. ramosius Panicum agrostoides var. condensum Panicum agrostoides
Treatment appears in FNA Volume 25. Treatment on page 478.

Culms 40-150 cm, rather robust. Sheaths with the throat usually glabrous or sparsely pilose on the sides; ligules 0.3-1 mm, membranous; blades usually 5-12 mm wide, flat, mostly glabrous or scabridulous, bases about equal in width to the subtending sheaths. Panicles terminal and axillary, usually with many spikelets. Spikelets 1.6-2.5 mm long, usually over 0.6 mm wide, crowded, green or purplish-tinged, pedicellate, pedicels short, with 1-several slender hairs near the apices.

Discussion

Panicum rigidulum subsp. rigidulum is the most common, most variable, and widest ranging of the five subspecies.

Selected References

None.

Lower Taxa

None.

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

puberulent +
Acute (?) +, Obtuse (?) +, Rounded (?) +  and Attenuate (?) +
anatomy +  and kranz +
Robert W. Freckmann +  and Michel G. Lelong +
Bosc ex Nees +
1 (?) +  and 3 (?) +
keeled +  and rounded +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
8 cm80 mm <br />0.08 m <br /> (50 cm500 mm <br />0.5 m <br />) +
scabridulous +
folded +  and flat +
5mm;12mm +
spikelike +
not developed +
terete +  and compressed +
sometimes longer +
fimbriate +
small green +
branched +  and simple +
ascending +  and erect +
compressed +
40 cm400 mm <br />0.4 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
woody +  and hard +
Conn. +, N.J. +, N.Y. +, W.Va. +, Del. +, D.C. +, Wis. +, B.C. +, N.S. +, Ont. +, Mass. +, Maine +, N.H. +, R.I. +, Vt. +, Fla. +, Ala. +, Kans. +, Ky. +, La. +, Mo. +, Okla. +, Pa. +, Tenn. +, Tex. +, Va. +, Puerto Rico +, N.C. +, S.C. +, Md. +, Calif. +, Miss. +, Ark. +, Ill. +, Ga. +, Ind. +, Mich. +, Ohio +  and Oreg. +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
subtending +
pubescent +  and glabrous +
tuberculate +
unequal +
membranous +
well-developed +
uncinate +
minute +
Oval (?) +  and Round (?) +
bracteate +  and ebracteate +
hollow +  and solid +
coriaceous +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
membranous +
inconspicuous +
2/5 +  and 3/4 +
acuminate +, acute +  and truncate +
complex +  and simple +
scabridulous +
concealed +  and prominent +
2 +  and 1 +
subterranean +
1/3 +  and 3/4 +
9 cm90 mm <br />0.09 m <br /> (40 cm400 mm <br />0.4 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
dry +  and fleshy +
keeled +  and compressed +
pubescent +  and glabrous +
purplish-tinged +  and green +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
unisexual +  and bisexual +
lanceolate +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
1 (?) +  and 3 (?) +
compound +  and simple +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
scabridulous +
Panicum condensum +, Panicum agrostoides var. ramosius +, Panicum agrostoides var. condensum +  and Panicum agrostoides +
Panicum rigidulum subsp. rigidulum +
Panicum rigidulum +
subspecies +
pilose +  and glabrous +
membranous +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
2/5 +  and 3/4 +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
pubescent +  and glabrous +
rugose +  and verrucose +
chartaceous-indurate +  and rigid +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +