Setaria faberi
Chinese foxtail, Chinese millet, foxtail, giant bristlegrass, giant foxtail, Japanese bristlegrass, setaire géante
50-200 cm.
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.
6-20 cm, densely spicate, arching and drooping from near the base;
rachises densely villous;
bristles (1)3(6), about 10 mm.
2.5-3 mm.
glumes 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.
= 36.
Setaria faberi
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.)
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