Setaria texana

Emery
Common names: Texas bristlegrass
Treatment appears in FNA Volume 25. Treatment on page 546.

Plants perennial. Culms 30-70 cm, wiry, much branched distally. Sheaths keeled, margins ciliate distally; collars glabrate; ligules to 1 mm, densely ciliate; blades 5-15 cm long, 2-4 mm wide, flat, scabrous. Panicles 2-6 cm, spikelike, basal portion rarely lobed, tapering distally; rachises scabrous to puberulent; bristles solitary, 3-10 mm. Spikelets 1.9-2.1 mm. Lower glumes about 1/2 as long as the spikelets, 3-veined; upper glumes about 3/4 as long as the spikelets, 5-veined; lower lemmas nearly equaling the upper lemmas, 5-veined; lower paleas rudimentary to 1/2 as long as the upper paleas; upper lemmas finely and transversely rugose; upper paleas narrow. 2n = 36.

Discussion

Setaria texana grows in shaded habitats on sandy loam soils of the Rio Grande plain of south Texas and northeastern Mexico.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Setaria texana"
not penicillate +
anatomy +  and kranz +
James M. Rominger +
1 (?) +  and 3 (?) +
keeled +  and rounded +
tapering +  and lobed +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
non-radiate +  and radiate +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
usually linear +  and lanceolate occasionally ovate +
20 cm200 mm <br />0.2 m <br /> (?) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not developed +
compressed +, ellipsoid +  and subglobose +
sometimes longer +
Texas bristlegrass +
branched +  and wiry +
decumbent +  and erect +
30 cm300 mm <br />0.3 m <br /> (70 cm700 mm <br />0.7 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 +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
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 +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
dry +  and fleshy +
scabrous +  and puberulent +
subsessile +  and short pedicellate +
in triplets +  and paired +
unisexual +  and bisexual +
acutish +  and obtuse +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
1 +  and 3 +
fused +  and free +
red +  and white +
fused +  and free +
dome--shaped +  and triangular +
Gramineae +
Setaria texana +
Setaria subg. Setaria +
species +
membranous +
membranous +  and herbaceous +
not keeled +
reduced +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +