Dichanthelium sect. Lanuginosa

(Hitchc.) Freckmann & Lelong
Treatment appears in FNA Volume 25. Treatment on page 422.

Plants cespitose, with caudices. Basal rosettes well-differentiated. Culms 15-100 cm, erect, ascending, or decumbent; internodes glabrous, puberulent, pilose, or densely pubescent or velvety; fall phase often much branched. Cauline leaves 4-7; sheaths glabrous, puberulent, sparsely to densely pubescent, pilose or velvety, often with hairs of two lengths; ligules 0.5-3 mm, of hairs, often with an adjacent pseudoligule of 2-5 mm hairs. Spikelets 0.8-3 mm, more or less ellipsoid, pubescent to subglabrous, acute to acuminate, upper glumes and lower lemmas not strongly veined. Upper florets acute to obtuse, sometimes minutely umbonate or apiculate.

Discussion

Hybridization, often followed by segregation in autogamous lines, produces a reticulate pattern of intergradation between members of this section. In the descriptions, no distinction is made between the ligules and pseudoligules because of the difficulty of distinguishing the two at less than 30x.

Selected References

None.

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

rounded +  and attenuate +
anatomy +  and kranz +
Mary E. Barkworth +
(Hitchc.) Freckmann & Lelong +
1 (?) +  and 3 (?) +
keeled +  and rounded +
well-differentiated +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
distinct +
shortly ovate +  and lanceolate +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not developed +
terete +  and compressed +
sometimes longer +
branching +  and hollow +
decumbent +  and sprawling +
decumbent +, ascending +  and erect +
15 cm150 mm <br />0.15 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Minn. +, Conn. +, N.J. +, N.Y. +, Wash. +, Ala. +, Mich. +, N.C. +, Pa. +, Puerto Rico +, S.C. +, W.Va. +, Ark. +, Iowa +, Kans. +, Mo. +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, Del. +, D.C +, Wis. +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. (Labr.) +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Pacific Islands (Hawaii) +, Md. +, Mass. +, Maine +, N.H. +, R.I. +, Vt. +, Fla. +, Wyo. +, Miss. +, Ariz. +, N.Mex. +, Tex. +, La. +, Ga. +, Tenn. +, Calif. +, Nev. +, Colo. +, Ill. +, Ind. +, Va. +, Idaho +, Ohio +, Utah +, Mont. +, Oreg. +  and Ky. +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Oval (?) +  and Round (?) +
bracteate +  and ebracteate +
velvety +, pubescent +, pilose +, puberulent +  and glabrous +
cauline +  and basal +
coriaceous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
membranous +
inconspicuous +
1/5 +  and 3/4 +
acuminate +, acute +  and truncate +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
dry +  and fleshy +
puberulent +  and sparsely densely pubescent pilose or velvety +
in triplets +  and paired +
pubescent +  and subglabrous +
1 +  and 60 +
unisexual +  and bisexual +
acute +  and acuminate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Gramineae +
Dichanthelium sect. Lanuginosa +
Dichanthelium +
section +
membranous +
apiculate +, umbonate +, acute +  and obtuse +
chartaceous-indurate +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +