Perennial, rambling grasses. Leaf-blades
linear-lanceolate, often pseudo-petiolate. Inflorescence a solitary raceme,
tightly embraced by spatheole, raceme comprising 1 sessile and 2 pedicelled
spikelets, pedicels forming together with its lower glume a triangular box
around the sessile floret. Sessile
spikelet bisexual, laterally compressed, callus swollen, lower glume
coriaceous, 2-toothed, upper glume
convex, awnless, lower floret staminate, upper lemma 2-lobed, awn 4-12 mm long, sometimes awnless.
Pedicelled spikelet awnless, unequal, one male or bisexual, as large as
sessile, other rudimentary.