Dichanthelium acuminatum subsp. sericeum

(Schmoll) Freckmann & Lelong
Treatment appears in FNA Volume 25. Treatment on page 426.

Plants more or less densely cespitose. Culms usually less than 30 cm, stiffly ascending to spreading, densely pubescent. Midculm sheaths nearly as long as the internodes; midculm blades usually 2-6.5 cm, usually less than 8 times as long as wide. Primary panicles usually well-exserted. Spikelets mostly 1.6-1.8 mm.

Discussion

Dichanthelium acuminatum subsp. sericeum grows in warm or hot ground around geysers and hot springs in the Rocky Mountains from Banff, Alberta south to Yellowstone National Park and east to Bighorn County, Wyoming.

Selected References

None.

Lower Taxa

None.

"usually distinctly longer and narrower" is not a number."decumbent" is not a number.

decumbent +, spreading +  and erect +
rounded +  and attenuate +
anatomy +  and kranz +
Mary E. Barkworth +
(Schmoll) Freckmann & Lelong +
1 (?) +  and 3 (?) +
keeled +  and rounded +
well-differentiated +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
subcordate +  and rounded +
swelling +
disarticulating +  and pseudopetiolate +
grayish-green +  and olivaceous +
distinct +
2 cm20 mm <br />0.02 m <br /> (12 cm120 mm <br />0.12 m <br />) +
ovate +  and lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not developed +
terete +  and compressed +
papillose-based +
sometimes longer +
decumbent +  and sprawling +
stiffly ascending +  and spreading +
0 cm0 mm <br />0 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Conn. +, N.J. +, N.Y. +, Wash. +, Va. +, Del. +, D.C. +, Wis. +, W.Va. +, Alta. +, B.C. +, Man. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Mass. +, Maine +, N.H. +, R.I. +, Vt. +, Fla. +, Wyo. +, N.Mex. +, Tex. +, La. +, Tenn. +, N.C. +, S.C. +, Pa. +, Calif. +, Puerto Rico +, Colo. +, Miss. +, Ala. +, Ark. +, Kans. +, Mo. +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, Mich. +, Minn. +, Ill. +, Ga. +, Ind. +, Iowa +, Ariz. +, Idaho +, Md. +, Ohio +, Utah +, Oreg. +, Mont. +, Pacific Islands (Hawaii) +, Nev. +  and Ky. +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
3 cm30 mm <br />0.03 m <br /> (?) +
Oval (?) +  and Round (?) +
bracteate +  and ebracteate +
olive green or grayish-green +  and yellowish-green +
glabrous +  and pubescent +
cauline +  and basal +
coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
membranous +
inconspicuous +
1/4 +  and 1/2 +
obtuse +  and acute +
glabrous +  and ciliate +
whitish-scabridulous +
2 cm20 mm <br />0.02 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
complex +  and simple +
concealed +  and prominent +
pubescent +  and glabrous +
swollen +
2 +  and 1 +
subterranean +
dry +  and fleshy +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
pilose +, puberulent +  and glabrous +
pubescent +, densely +  and glabrous +
in triplets +  and paired +
yellowish-green +  and olivaceous or purplish +
1 +  and 60 +
unisexual +  and bisexual +
subacute +, obtuse +, obovoid +  and ellipsoid +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Panicum acuminatum +  and Panicum lanuginosum +
Dichanthelium acuminatum subsp. sericeum +
Dichanthelium acuminatum +
subspecies +
membranous +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
obtuse +  and acute or minutely umbonate or apiculate +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
chartaceous-indurate +
decumbent +, spreading +  and erect +
involute +  and flat +
decumbent +, spreading +  and erect +
decumbent +, spreading +  and erect +
decumbent +, spreading +  and erect +
decumbent +, spreading +  and erect +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +