Plants hermaphroditic, rhizomatous, perennial. Culms erect (solitary), glabrous; internodes solid, terete. Leaves cauline;
sheaths terete, margins open; auricles absent; ligules a line of hairs; blades flat or folded, not pungent, attenuate, stiff.
Panicles open; primary branches spreading or ascending, terminating in a spikelet. Spikelets solitary, laterally
compressed, awnless, pedicellate, pedicels without glands; disarticulation above glumes; florets 1, callus hairy; reduced
floret absent; glumes 1-veined, unequal, equal to floret length, awnless, glabrous; lemmas 1-veined, chartaceous, entire,
awnless, glabrous or hairy, veins glabrous to hairy; paleas 2-veined, awnless, hairy, Stamens 3; anthers yellow, Achene
with free pericarp, terete. Base chromosome number x=10
A genus of about 4 species native to North America. Species of open habitats, dry and sandy prairies or
dunes, or sandy pine barrens.