Setaria grisebachii
Setaria macrosperma
Grisebach bristlegrass, Grisebach's bristlegrass
coral bristlegrass
30-100 cm;
nodes pubescent, hairs appressed.
1-1.5 m. Sheaths prominently keeled, margins villous;
ligules 1-3 mm;
blades 1-2 cm wide, flat, scabrous.
with ciliate margins;
ligules ciliate;
blades to 12(25) cm long, to 10(20) mm wide, flat, hispid on both surfaces.
3-18 cm, loosely spicate, interrupted, often purple;
rachises hispid;
bristles 1-3, 5-15 mm, flexible, antrorsely scabrous.
to 25 cm, loosely spicate;
rachises readily visible, sparsely villous;
bristles 1(2), 15-30 mm, flexible, antrorsely scabrous.
1.5-2.2 mm.
3-3.2 mm.
about 1/3 as long as the spikelets, distinctly 3-veined, lateral veins coalescing with the central veins below the apices;
upper glumes nearly equaling the upper lemmas, obtuse, 5-veined;
lower lemmas equaling the upper lemmas;
lower paleas about 1/3 as long as the lower lemmas, narrow;
upper lemmas finely and transversely rugose;
upper paleas similar to the upper lemmas.
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.
= unknown.
= unknown.
Setaria grisebachii
Setaria macrosperma
Setaria grisebachii is the most widespread and abundant native annual species of Setaria in the south-western United States. It grows in open ground and extends along the central highlands of Mexico to Guatemala, usually at elevations of 750-2500 m. The specimens from Maryland were collected on chrome ore piles; the species is not established in the state.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
MD Biodiversity
WildflowerSearch
iNaturalist
USDA Plants Database
