Dichanthelium sect. Sphaerocarpa

(Hitchc. & Chase) Freckmann & Lelong
Treatment appears in FNA Volume 25. Treatment on page 440.

Plants cespitose, with caudices. Basal rosettes well-differentiated; blades large, ovatelanceolate. Culms 15-95 cm, usually nearly erect, sometimes spreading to ascending, glabrous or almost glabrous, slightly fleshy or thickened; fall culms with sparse branching. Cauline leaves 3-7, glabrous or almost glabrous throughout; ligules almost obsolete, usually of hairs shorter than 0.8 mm, sometimes with a minute membranous base; blades firm, thick, margins cartilaginous, bases cordate, ciliate. Spikelets 1-1.8 mm, spherical to broadly obovoid, puberulent or some¬times glabrous. Upper florets blunt or minutely umbonate.

Discussion

Dichanthelium sect. Sphaerocarpa extends from the southeastern United States through Central America and Cuba to northern South America. Pairs of species often grow together, with infrequent apparent hybridization.

Selected References

None.

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

anatomy +  and kranz +
Mary E. Barkworth +
(Hitchc. & Chase) Freckmann & Lelong +
1 (?) +  and 3 (?) +
keeled +  and rounded +
well-differentiated +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
cordate +
minute +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
distinct +
ovatelanceolate +
spikelike +
not developed +
terete +  and compressed +
usually distinctly longer and narrower +
sometimes longer +
branching +  and hollow +
decumbent +  and sprawling +
spreading +  and ascending +
15 cm150 mm <br />0.15 m <br /> (95 cm950 mm <br />0.95 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 +
0.8 cm8 mm <br />0.008 m <br /> (?) +
Oval (?) +  and Round (?) +
bracteate +  and ebracteate +
solid +  and hollow +
cauline +  and basal +
coriaceous +
membranous +
inconspicuous +
1/5 +  and 3/4 +
acuminate +, acute +  and truncate +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
dry +  and fleshy +
in triplets +  and paired +
glabrous +, some +  and puberulent +
1 +  and 60 +
unisexual +  and bisexual +
spherical +  and broadly obovoid +
0.1 cm1 mm <br />0.001 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 +
Gramineae +
Dichanthelium sect. Sphaerocarpa +
Dichanthelium +
section +
membranous +
umbonate +  and blunt +
chartaceous-indurate +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +