Panicum rigidulum subsp. elongatum

(Scribn.) Freckmann & Lelong
Synonyms: Panicum stipitatum
Treatment appears in FNA Volume 25. Treatment on page 478.

Plants similar to subsp. rigidulum, but more conspicuously purple-tinged throughout, especially the panicles. 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 relatively narrow; branches few, stiffly ascending. Spikelets 2.4-3 mm long, usually less than 0.6 mm wide, conspicuously stipitate, purple, often falcate, subsecund along the branchlets. Upper florets stipitate, stipes to 0.4 mm, slender.

Discussion

Panicum rigidulum subsp. elongatum is most common in the piedmont and mountain regions of the eastern United States.

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 +
(Scribn.) Freckmann & Lelong +
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 +
35 cm350 mm <br />0.35 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 +
purple +, purple-tinged +  and green +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
unisexual +  and bisexual +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
0mm +  and 0.6mm +
1 (?) +  and 3 (?) +
compound +  and simple +
slender +
0 cm0 mm <br />0 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
scabridulous +
Panicum stipitatum +
Panicum rigidulum subsp. elongatum +
Panicum rigidulum +
subspecies +
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 +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +