Setaria pumila subsp. pallidefusca

(Schumach.) B.K. Simon
Synonyms: Setaria pallidefusca
Treatment appears in FNA Volume 25. Treatment on page 558.

Blades dark green. Bristles reddish. Spikelets 2-2.5 mm. 2n = 18, 36, 54, 72.

Discussion

Setaria pumila subsp. pallidefusca is native to tropical Africa. It is now established as a weed in south¬eastern Louisiana, but it has also been collected in the past on ballast dumps in Portland, Oregon.

Reports of S. nigrirostris (Nees) T Durand & Schinz in North America have not been verified. It differs from S. pumila in being a rhizomatous perennial with spikelets 3.5-5 mm long and bristles with thickened tips (those of S. pumila are slender throughout). It is a native of southern Africa.

Selected References

None.

Lower Taxa

None.

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

72 +, 54 +, 36 +  and 18 +
not penicillate +
anatomy +  and kranz +
James M. Rominger +
(Schumach.) B.K. Simon +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
non-radiate +  and radiate +
usually linear +  and lanceolate occasionally ovate +
20 cm200 mm <br />0.2 m <br /> (?) +
4mm;10mm +
spikelike +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
not developed +
compressed +, ellipsoid +  and subglobose +
sometimes longer +
branched +  and solid +
decumbent +  and erect +
30 cm300 mm <br />0.3 m <br /> (130 cm1,300 mm <br />1.3 m <br />) +
Va. +, Colo. +, Mass. +, Tex. +, La. +, Ohio +, Ariz. +, Utah +, Ala. +, D.C. +, Ark. +, Calif. +, Conn. +, Del. +, Fla. +, Ga. +, Pacific Islands (Hawaii) +, Iowa +, Idaho +, Ill. +, Ind. +, Kans. +, Ky. +, Md. +, Maine +, Mich. +, Minn. +, Mo. +, Miss. +, Mont. +, N.C. +, N.Dak. +, Nebr. +, N.H. +, N.J. +, N.Mex. +, Nev. +, N.Y. +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Vt. +, Wash. +, Wis. +, W.Va. +, Wyo. +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. (Labr.) +, N.S. +, Ont. +, P.E.I. +, Que. +  and Sask. +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
papillose-based +
uncinate +
bracteate +  and ebracteate +
solid +  and hollow +
cauline +  and basal +
coriaceous +
membranous +
inconspicuous +
not constricted +
indurate +  and membranous +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
spikelike +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
dry +  and fleshy +
Introduced +
subsessile +  and short pedicellate +
in triplets +  and paired +
unisexual +  and bisexual +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
1 (?) +  and 3 (?) +
fused +  and free +
red +  and white +
fused +  and free +
dome--shaped +  and triangular +
Setaria pallidefusca +
Setaria pumila subsp. pallidefusca +
Setaria pumila +
subspecies +
membranous +
membranous +  and herbaceous +
reduced +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +