Perennial. Panicle moderatly dense to spiciform, rarely open. Spikelet 2-several-flowered, the rhachila hairy; glumes mostly unequal and shorter than spikelet; lemmas membranous to thinly coriaceous, strongly compressed and distincly keeled, bidentate or sometimes bisetulate. dorsally awned from below middle, the awn geniculate or merely reflexed; palea gaping, silvery. Ovary glabrous; endosperm sometimes liquid.
All temperate regions except Africa.
Species ± 70, Weedy places, meadows, mountain slopes and alpine grassland.
LITERATURES
Chrtek Jr., J. 1990. Three new species of Trisetum (Poaceae) from
China. Fol. Geobot. & Phytotax. 25: 333--335.
Randall, J.L. & K.W. Hilu. 1986. Biosystematic studies of North
American Trisetum spicatum (Poaceae). Syst. Bot. 11:
567--578, 8 fig, 4 tab. --- Very variable, infraspecific
taxa, or spp for the hexaploids not supported
