Setaria liebmannii

E. Fourn.
Common names: Liebmann's bristlegrass
Treatment appears in FNA Volume 25. Treatment on page 552.

Plants annual. Culms 30-90 cm. Sheaths glabrous, margins ciliate; ligules ciliate; blades to 20 cm long, 10-20 mm wide, flat, scabrous on both surfaces. Panicles 10-25 cm, loosely spicate; rachises scabrous; bristles solitary, 7-15 mm, slender, antrorsely scabrous. Spikelets 2-2.7 (3) mm. Lower glumes about 1/3 as long as the spikelets, 3-veined; upper glumes and lower lemmas 7-veined, the 5 central veins coalescing at the apices; lower paleas absent; upper lemmas gibbous, strongly and coarsely transversely rugose; upper paleas similar to the upper lemmas. 2n = 18.

Discussion

Within the Flora region, Setaria liebmannii is known only from southern Arizona, but it is a common species along the Pacific slope from northern Mexico to Nicaragua, usually growing at elevations below 750 m. The five apically coalescing veins and the additional free pair at the periphery are unique among the Setaria species in the Flora region.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Setaria liebmannii"
not penicillate +
anatomy +  and kranz +
James M. Rominger +
E. Fourn. +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
non-radiate +  and radiate +
0 cm0 mm <br />0 m <br /> (20 cm200 mm <br />0.2 m <br />) +
usually linear +  and lanceolate occasionally ovate +
20 cm200 mm <br />0.2 m <br /> (?) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
not developed +
compressed +, ellipsoid +  and subglobose +
sometimes longer +
Liebmann's bristlegrass +
branched +  and solid +
decumbent +  and erect +
30 cm300 mm <br />0.3 m <br /> (90 cm900 mm <br />0.9 m <br />) +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
bracteate +  and ebracteate +
solid +  and hollow +
cauline +  and basal +
coriaceous +
membranous +
inconspicuous +
not constricted +
indurate +  and membranous +
rarely exceeding the upper lemmas +  and equaling +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
spikelike +
10 cm100 mm <br />0.1 m <br /> (25 cm250 mm <br />0.25 m <br />) +
dry +  and fleshy +
subsessile +  and short pedicellate +
in triplets +  and paired +
unisexual +  and bisexual +
acutish +  and obtuse +
0.2 cm2 mm <br />0.002 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
1 +  and 3 +
fused +  and free +
red +  and white +
fused +  and free +
dome--shaped +  and triangular +
Gramineae +
Setaria liebmannii +
Setaria subg. Setaria +
species +
membranous +
membranous +  and herbaceous +
not keeled +
reduced +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +