Dichanthelium acuminatum subsp. implicatum

(Scribn.) Freckmann & Lelong
Synonyms: Panicum sabulorum var. thinum Panicum oricola Panicum meridionale var. albemarlense Panicum meridionale Panicum implicatum Panicum columbianum var. thinium Panicum columbianum var. siccanum Panicum columbianum var. oricola Panicum albemarlense Panicum acuminatum var. implicatum
Treatment appears in FNA Volume 25. Treatment on page 425.

Plants densely cespitose. Culms seldom over 50 cm, slender, suberect, ascending or spreading; nodes more or less densely pubescent; fall phase branching extensively from the lower and midculm nodes, with conspicuous, flabellate fascicles of branches and reduced blades. Cauline sheaths shorter than the internodes, lower sheaths usually pilose with papillose-based hairs, upper sheaths often short-pubescent; midculm sheaths about 1/2 as long as the internodes; blades usually 2-6 mm wide, more than 8 times longer than wide, relatively firm, erect to ascending, often yellowish-green, abaxial surfaces densely pubescent with short papillose-based hairs or short-pubescent with subappressed hairs, adaxial surfaces more or less densely pilose, hairs to 6 mm, conspicuous, erect or ascending, occasionally with shorter hairs underneath. Spikelets 1.3-1.6 mm, usually broadly obovoid.

Discussion

Dichanthelium acuminatum subsp. implicatum usually grows in low, moist areas, including open wood¬lands, meadows, bogs, and cedar and hemlock swamps, and also in drier, sandy areas. Its range extends from south central Canada to the midwestern and northeastern United States. It intergrades occasionally with the more widespread subsp. fasciculatum.

Selected References

None.

Lower Taxa

None.

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

decumbent +, spreading +  and erect +
anatomy +  and kranz +
Mary E. Barkworth +
(Scribn.) 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 +
yellowish-green +
distinct +
2 cm20 mm <br />0.02 m <br /> (12 cm120 mm <br />0.12 m <br />) +
ovate +  and lanceolate +
reduced +
2mm;6mm +
spikelike +
not developed +
terete +  and compressed +
usually distinctly longer and narrower +
papillose-based +
sometimes longer +
decumbent +  and sprawling +
spreading +, ascending +  and suberect +
slender +
1 cm10 mm <br />0.01 m <br /> (15 cm150 mm <br />0.15 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 +
papillose-based +
ascending +, erect +  and subappressed +
conspicuous +
short-pubescent +
uncinate +
0 cm0 mm <br />0 m <br /> (0.6 cm6 mm <br />0.006 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 +
complex +  and simple +
concealed +  and prominent +
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 +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
1 (?) +  and 3 (?) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
Panicum sabulorum var. thinum +, Panicum oricola +, Panicum meridionale var. albemarlense +, Panicum meridionale +, Panicum implicatum +, Panicum columbianum var. thinium +, Panicum columbianum var. siccanum +, Panicum columbianum var. oricola +, Panicum albemarlense +  and Panicum acuminatum var. implicatum +
Dichanthelium acuminatum subsp. implicatum +
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 +
short-pubescent +
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 +