Dichanthelium chamaelonche

(Trin.) Freckmann & Lelong
Common names: Small-seeded panicgrass
Synonyms: Panicum chamaelonche
Treatment appears in FNA Volume 25. Treatment on page 438.

Plants usually densely cespitose, with caudices. Basal rosettes well-differentiated; blades 1-5 cm, ovate to lanceolate. Culms 5-45 cm tall, 0.2-0.8 mm thick, erect, often purplish; nodes glabrous or sparsely pubescent; internodes often ascending-pubescent below; fall phase branching extensively from the basal nodes, usually forming very dense cushions. Cauline leaves 3-5; sheaths mostly shorter than the internodes, often purplish, glabrous or sparsely pubescent, margins often sparsely ciliate; ligules 0.2-0.5 mm, of hairs, without adjacent pseudoligules; blades 2-5 cm long (rarely longer), 1-4 mm wide, flat or involute, rather firm, ascending, often purplish, usually glabrous on both surfaces, bases subcordate, often with a few long, stiff cilia, margins narrowly white, cartilaginous, and scabridulous, blades of the flag leaves only slightly shorter than those of the lower leaves. Primary panicles 1.5-5 cm (seldom longer), nearly as wide as long, delicate, dense; branches numerous, flexuous, spreading, often purplish, glabrous or faintly scabridulous. Spikelets 1.1-1.5 mm long, 0.7-1 mm wide, broadly ellipsoid or obovoid, often purple-tinged, glabrous or puberulent, obtuse or subacute. Lower glumes approximately 1/3 as long as the spikelets, broadly acute or obtuse; upper glumes and lower lemmas subequal or the glumes slightly shorter than the lemmas; lower florets sterile; upper florets 0.9-1.2 mm, ellipsoid, apices exceeding the upper glumes and lower lemmas, subacute.

Discussion

Dichanthelium chamaelonche grows in low, open, sandy, coastal pine woods, savannahs, and moist depressions in sand dunes. It is restricted to the south-eastern United States.

Selected References

None.

Key

1 Culms 5-20 cm tall, glabrous or puberulent; spikelets 1.3-1.5 mm long, puberulent Dichanthelium chamaelonche subsp. breve
1 Culms 10-45 cm tall, glabrous; spikelets 1.1-1.4 mm long, glabrous Dichanthelium chamaelonche subsp. chamaelonche

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

anatomy +  and kranz +
Mary E. Barkworth +
(Trin.) Freckmann & Lelong +
1 (?) +  and 3 (?) +
keeled +  and rounded +
well-differentiated +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
subcordate +
swelling +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
distinct +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
involute +, flat +, ovate +  and lanceolate +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1mm;4mm +
scabridulous +
spikelike +
not developed +
terete +  and compressed +
usually distinctly longer and narrower +
Small-seeded panicgrass +
decumbent +  and sprawling +
5 cm50 mm <br />0.05 m <br /> (45 cm450 mm <br />0.45 m <br />) +
pubescent +  and glabrous +
geniculate +
5 cm50 mm <br />0.05 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 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 +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Oval (?) +  and Round (?) +
bracteate +  and ebracteate +
ascending-pubescent +
cauline +  and basal +
coriaceous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
membranous +
inconspicuous +
obtuse +  and acute +
scabridulous +
complex +  and simple +
concealed +  and prominent +
pubescent +  and glabrous +
2 +  and 1 +
subterranean +
dry +  and fleshy +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
pubescent +  and glabrous +
in triplets +  and paired +
purple-tinged +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
puberulent +  and glabrous +
1 +  and 60 +
unisexual +  and bisexual +
subacute +, obtuse +, obovoid +  and ellipsoid +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
0.7mm +  and 1mm +
1 (?) +  and 3 (?) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
Panicum chamaelonche +
Dichanthelium chamaelonche +
Dichanthelium sect. Ensifolia +
species +
membranous +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
chartaceous-indurate +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +