Dichanthelium acuminatum subsp. lindheimeri

(Nash) Freckmann & Lelong
Synonyms: Panicum lindheimeri Panicum lanuginosum var. lindheimeri Panicum acuminatum var. lindeheimeri
Treatment appears in FNA Volume 25. Treatment on page 426.

Culms often yellowish-green, usually glabrous; nodes glabrous; fall phase usually with stiffly spreading culms with dense fascicles of branches with reduced, often involute blades. Cauline sheaths often yellowish-green, usually glabrous or the lowest sheaths sparsely ascending-pubescent; blades 4-9 cm long, 4-8 mm wide, stiffly ascending or spreading, often yellowish-green, glabrous on both surfaces or puberulent abaxially, bases rounded, margins faintly whitish-scabridulous, with conspicuous, long, papillose-based cilia at the base. Primary panicles 3.5-7 cm, open, less than twice as long as wide. Spikelets 1.3-1.6 mm, diverging to ascending, usually obovoid, obtuse.

Discussion

Dichanthelium acuminatum subsp. lindheimeri grows in dry or moist, sandy or clayey, open, often disturbed areas, open woodlands, limestone glades, and roadsides, primarily in the eastern portion of the species range. It intergrades occasionally with the pubescent subsp. fasciculatum and subsp. implicatum.

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 +
(Nash) Freckmann & Lelong +
1 (?) +  and 3 (?) +
keeled +  and rounded +
well-differentiated +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
puberulent +
rounded +
swelling +
disarticulating +  and pseudopetiolate +
yellowish-green +
distinct +
4 cm40 mm <br />0.04 m <br /> (9 cm90 mm <br />0.09 m <br />) +
ovate +  and lanceolate +
reduced +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 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 +
conspicuous +
yellowish-green +
decumbent +  and sprawling +
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 +
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 +
ascending-pubescent +
glabrous +  and ciliate +
whitish-scabridulous +
complex +  and simple +
concealed +  and prominent +
swollen +
2 +  and 1 +
subterranean +
dry +  and fleshy +
3.5 cm35 mm <br />0.035 m <br /> (7 cm70 mm <br />0.07 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 +
obtuse +  and obovoid +
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 lindheimeri +, Panicum lanuginosum var. lindheimeri +  and Panicum acuminatum var. lindeheimeri +
Dichanthelium acuminatum subsp. lindheimeri +
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 +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +