Dichanthelium ovale subsp. ovale

Synonyms: Panicum malacon
Treatment appears in FNA Volume 25. Treatment on page 429.

Basal blades 3-8 cm, rigid, with long hairs on or near the bases and margins. Culms more than 1 mm thick, stiff; lower internodes pilose; upper internodes short-pilose to nearly glabrous. Cauline sheaths with ascending hairs, hairs to 4 mm, not papillose-based: ligules 1-4 mm; blades 5-12 mm wide, firm, ascending, abaxial surfaces appressed-pubescent, adaxial surfaces nearly glabrous except for the long hairs on or near the scabridulous margins and bases. Spikelets 2.5-3 mm, ellipsoid, sparsely to densely pilose. 2n = 18.

Discussion

Dichanthelium ovale subsp. ovale grows in dry, open, sandy woods, pinelands, and sandhills along the east coast of the United States from New Jersey south¬wards, extending into the coastal plain from eastern Texas to South Carolina, and in Mexico, Honduras, Guatemala, and Nicaragua. It intergrades somewhat with subsp. pseudopubescens. Occasional long-spikelet specimens exhibit morphological characteristics of D. oligosanthes and D. commutatum.

Selected References

None.

Lower Taxa

None.

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

appressed-pubescent +
anatomy +  and kranz +
Mary E. Barkworth +
(Elliott) Gould & C.A. Clark +
1 (?) +  and 3 (?) +
keeled +  and rounded +
3 cm30 mm <br />0.03 m <br /> (?) +  and 8 cm80 mm <br />0.08 m <br /> (?) +
well-differentiated +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
narrowed +  and rounded +
swelling +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
distinct +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Both (?) +  and 1 (?) +
lanceolate +
reduced +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
5mm;12mm +
spreading;ascending +
spikelike +
not developed +
terete +  and compressed +
usually distinctly longer and narrower +
sometimes longer +
decumbent +  and prostrate +
spreading +  and ascending +
15 cm150 mm <br />0.15 m <br /> (60 cm600 mm <br />0.6 m <br />) +
Del. +, Wis. +, Fla. +, Puerto Rico +, N.J. +, Tex. +, La. +, N.C. +, S.C. +, Pa. +, Ark. +, Iowa +, Ill. +, Ind. +, Md. +, Miss. +, Ohio +, Okla. +, N.Y. +, Va. +, Ala. +, Ga. +, Conn. +, Mass. +, Minn. +, Mich. +  and Ky. +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
not papillose-based +
uncinate +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Oval (?) +  and Round (?) +
bracteate +  and ebracteate +
glabrous +  and long-hairy +
cauline +  and basal +
coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
membranous +
inconspicuous +
1/3 +  and 1/2 +
subacute +, acute +  and triangular +
scabridulous +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
dry +  and fleshy +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
spreading +  and ascending +
in triplets +  and paired +
1 +  and 60 +
unisexual +  and bisexual +
ellipsoid +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1 (?) +  and 3 (?) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
Panicum malacon +
Dichanthelium ovale subsp. ovale +
Dichanthelium ovale +
subspecies +
membranous +
subacute +  and ellipsoid +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
usually slightly shorter +
chartaceous-indurate +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +