Trisetaria Forssk., Fl. Aegypt.-Arab. 27. 1775. Bor in Towns., Guest & Al-Rawi, Fl. Iraq 9:354.1968; Bor in Rech.f., Fl. Iran. 70:320.1970; Tzvelev, Poaceae URSS 265.1976; Jonsell in Tutin et al., Fl. Eur. 5:224. 1980.
Annuals. Leaf-blades flat or convolute. Spikelets 1-5-flowered, all alike, the rhachilla produced; glumes subequal or unequal, ± keeled, membranous, usually with hyaline margins, the lower 1(-3)-nerved, the upper 3-nerved; lemmas shorter than the glumes, the florets ± enclosed except for the awns, 5-nerved, hyaline, prominently 2-toothed, the teeth setose, awned from above the middle with a geniculate awn spirally twisted in the lower half; callus well developed, shortly bearded; stamens 3; stigmas 2.
A genus of 4 species in the Mediterranean region and southern Europe extending eastwards into Northwest India; 1 species occurs in Pakistan.