Setaria macrosperma

(Scribn. & Merr.) K. Schum.
Common names: Coral bristlegrass
Treatment appears in FNA Volume 25. Treatment on page 550.

Plants perennial. Culms 1-1.5 m. Sheaths prominently keeled, margins villous; ligules 1-3 mm; blades 1-2 cm wide, flat, scabrous. Panicles to 25 cm, loosely spicate; rachises readily visible, sparsely villous; bristles 1 (2), 15-30 mm, flexible, antrorsely scabrous. Spikelets 3-3.2 mm. Lower glumes about 1/3 as long as the spikelets, 3-veined; upper glumes about 3/4 as long as the spikelets, 5-veined; lower lemmas equaling the upper lemmas; lower paleas about 1/2 as long as the upper paleas, hyaline, narrow; upper lemmas finely and transversely rugose; upper paleas similar to the upper lemmas. 2n = unknown.

Discussion

Setaria macrosperma grows on shell or coral islands, and occasionally in old fields or hammocks. It is most frequent in Florida, but has been collected in both South Carolina and Georgia. It also grows in the Bahamas and Mexico.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Setaria macrosperma"
not penicillate +
anatomy +  and kranz +
James M. Rominger +
(Scribn. & Merr.) K. Schum. +
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 /> (?) +
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 />) +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not developed +
compressed +, ellipsoid +  and subglobose +
sometimes longer +
Coral bristlegrass +
branched +  and solid +
decumbent +  and erect +
100 cm1,000 mm <br />1 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
S.C. +, Fla. +  and Ga. +
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 +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 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 +
0 cm0 mm <br />0 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 +
0.3 cm3 mm <br />0.003 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
1 +  and 3 +
fused +  and free +
red +  and white +
fused +  and free +
dome--shaped +  and triangular +
Gramineae +
Setaria macrosperma +
Setaria subg. Setaria +
species +
membranous +
membranous +  and herbaceous +
not keeled +
reduced +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +