Plants hermaphroditic, caespitose or stoloniferous, annuals (ours) or perennials. Culms mat forming, glabrous; internodes solid,
terete. Leaves cauline; sheaths with compressed keels, margins connate; auricles absent; ligules a ciliate membrane; blades
flat, not pungent. Panicles of 2-10 spicate primary unilateral branches; branches digitate, spreading, terminating
in a bare point. Spikelets solitary, laterally compressed, sessile; disarticulation above glumes; florets 2-7,
callus glabrous; reduced florets at apex; glumes 1-veined, unequal, shorter than first floret, glabrous; lemmas 3-veined,
membranous, entire, awned or mucronate, glabrous, veins glabrous; paleas 2-veined, awnless, scabrous. Stamens 3; anthers
yellow. Achenes with free pericarp, terete, suborbicular, transversely rugose. Base chromosome number x = 10.
A genus of about 13 species native to Africa, Australia, and Eurasia. These species are common in open
habitats, some are disturbance species while others occupy dry, sandy habitats.