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 the sessile, the other rudimentary.