Panicum capillare subsp. hillmanii

(Chase) Freckmann & Lelong
Synonyms: Panicum hillmanii
Treatment appears in FNA Volume 25. Treatment on page 459.

Culms often stout and stiff, usually bluish-green, usually not branching at the base. Blades thick, firm. Panicle branches stiff; secondary branches and pedicels usually appressed, varying to narrowly divergent. Spikelets 2.2-3 mm. Lower paleas 1-1.8 mm; mature upper florets nigrescent, with a prominent lunate scar at the base.

Discussion

Panicum capillare subsp. hillmanii grows in weedy habitats in California, New Mexico, Iowa, Kansas, Oklahoma, and Texas. It may be a southern Great Plains extension of the western plants of subsp. capillare that are sometimes called P. capillare var. occidentale Rydb., but it differs from subsp. capillare in more characters than such plants.

Selected References

None.

Lower Taxa

None.

"thick" is not a number."decumbent" is not a number."-11-veined" is not declared as a valid unit of measurement for this property.

puberulent +
acute +, obtuse +, rounded +  and attenuate +
anatomy +  and kranz +
Robert W. Freckmann +  and Michel G. Lelong +
(Chase) Freckmann & Lelong +
1 (?) +  and 3 (?) +
keeled +  and rounded +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
pubescent +  and glabrous +
filiform +  and ovate flat +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not developed +
terete +  and compressed +
thick-walled +
sometimes longer +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
small green +
bluish-green +
straight +
erect +  and decumbent +
not compressed +
slender +  and stout +
15 cm150 mm <br />0.15 m <br /> (130 cm1,300 mm <br />1.3 m <br />) +
not woody +
Conn. +, N.J. +, N.Y. +, Wash. +, Del. +, Wis. +, W.Va. +, D.C. +, Alta. +, B.C. +, Man. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Fla. +, Wyo. +, N.H. +, N.Mex. +, Tex. +, La. +, Tenn. +, N.C. +, S.C. +, Pa. +, Nev. +, Mass. +, Maine +, R.I. +, Vt. +, Va. +, Colo. +, Virgin Islands +, Calif. +, Ala. +, Kans. +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, Ark. +, Ill. +, Ga. +, Ind. +, Iowa +, Ariz. +, Idaho +, Md. +, Ohio +, Utah +, Mo. +, Minn. +, Mich. +, Mont. +, Miss. +, Ky. +  and Oreg. +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
pubescent +  and glabrous +
tuberculate +
unequal +
membranous +
well-developed +
papillose-based +
purplish +  and bluish +
uncinate +
Oval (?) +  and Round (?) +
bracteate +  and ebracteate +
hollow +  and solid +
coriaceous +
membranous +
inconspicuous +
1/3 +  and 1/2 +
acuminate +, acute +, obtuse +  and truncate +
empty +  and veined +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
complex +  and simple +
scabridulous +
concealed +  and prominent +
2 +  and 1 +
disarticulating +
13cm +  and 50cm +
subterranean +
/2 +  and 1 +
pyramidal +
7 cm70 mm <br />0.07 m <br /> (24 cm240 mm <br />0.24 m <br />) +
simple +  and compound +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
dry +  and fleshy +
hispid +  and hirsute +
in triplets +  and paired +
1 +  and 60 +
unisexual +  and bisexual +
ellipsoid +  and lanceoloid +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1 +  and 3 +
compound +  and simple +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Panicum hillmanii +
Panicum capillare subsp. hillmanii +
Panicum capillare +
subspecies +
membranous +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
pubescent +  and glabrous +
rugose +  and verrucose +
chartaceous-indurate +  and rigid +
aquatic +  and terrestrial +
hispid +  and hirsute +
dioecious +, monoecious +  and synoecious +