creeping grasses, much-branched. Leaf-blades lanceolate to linear-lanceolate,
veins prominent, ligules membranous. Inflorescence an open or condensed panicle
of pedicellate spikelets. Spikelets all alike, strongly laterally compressed,
distinctly gibbous, 2-flowered, falling entire; glumes, dissimilar, lower
shorter, subacute, upper gibbous, obtuse. Florets dissimilar, lower sterile; upper floret perfect, strongly gibbous on
back, lemmas indurate, smooth or minutely pitted, margin involute, tip with a
distinct callus crest; paleas of similar texture on back, margin hyaline.
Stamens 3. Caryopsis similar to upper florets.