Setaria faberi
Setaria verticillata
Chinese foxtail, Chinese millet, foxtail, giant bristlegrass, giant foxtail, Japanese bristlegrass, setaire géante
bristly foxtail, bur bristlegrass, hook bristle grass, hook foxtail, rough bristle grass, setaire verticillee
50-200 cm.
30-100 cm;
nodes glabrous.
glabrous, fringed with white hairs;
ligules about 2 mm;
blades 15-30 cm long, 10-20 mm wide, usually with soft hairs on the adaxial surface.
glabrous, margins ciliate distally;
ligules to 1 mm, densely ciliate;
blades 5-15 mm wide, flat, abaxial surfaces scabrous.
6-20 cm, densely spicate, arching and drooping from near the base;
rachises densely villous;
bristles (1)3(6), about 10 mm.
5-15 cm, tapering to the apices;
rachises retrorsely rough hispid;
bristles solitary, 4-7 mm, retrorsely scabrous.
2.5-3 mm.
2-2.3 mm.
about 1 mm, acute, 3-veined;
upper glumes about 2.2 mm, obtuse, 5-veined;
lower lemmas about 2.8 mm, obtuse;
lower paleas about 2/3 as long as the lower lemmas;
upper lemmas pale, finely and distinctly transversely rugose;
upper paleas similar to the upper lemmas.
about 1/3 as long as the spikelets, obtuse, 1(3)-veined;
upper glumes nearly as long as the spikelets;
lower paleas about 1/2 as long as the spikelets, broad;
upper lemmas finely and transversely rugose;
upper paleas similar to the upper lemmas.
= 36.
= 18, 36, 54, 72, 108.
Setaria faberi
Setaria verticillata
Setaria faberi spread rapidly throughout the North American corn belt after being accidentally introduced from China in the 1920s. It has become a major nuisance in corn and bean fields of the midwestern United States.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Setaria verticillata is a European adventive that is now common throughout the cooler regions of the contiguous United States and in southern Canada. It is an aggressive weed in the vineyards of central California. Reports of S. carnei Hitchc. from North America are based on misidentification of this species.
Setaria verticillata resembles the S. adhaerans but differs in having longer panicles and spikelets, sheath margins that are ciliate distally, and blades that are scabrous, not hairy. Setaria verticillata is a more northern species than S. adhaerans, but their ranges overlap in the Flora region.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
- Local floras:
BC, 
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OR, 
WA - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
Go Botany, 
IL Wildflowers, 
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MD Biodiversity, 
MI Flora, 
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WildflowerSearch
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USDA Plants Database- LBJ Wildflower Center
- SEINet
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- Local floras: BC, CA, OR, WA
- Local Web sites: CalFlora, CalPhotos, Flora NW, Go Botany, IL Wildflowers, KS Wildflowers, LA Plants, MD Biodiversity, MI Flora, MN Wildflowers, MO Plants, PNW Herbaria
- WildflowerSearch
- iNaturalist (observations)
- USDA Plants Database
- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
