Description
Key Characters:
Growth Form:
Perennials or sometimes annuals.
Stems:
Culms nearly always decumbent at base.
Roots:
Roots fibrous.
Leaves:
Leaves simple.
Alternate.
Blades linear, narrowed abruptly or gradually at base.
Veins parallel.
Sheaths apex prolonged into an auricle; ligule membranous.
Stipules absent.
Flowers:
Inflorescences composed of terminal or axillary, paired or digitate racemes, when paired, the pairs often interlocked back to back, internodes and pedicels clavate to inflated; spikelets 2-flowered, sessile spikelet dorsally compressed, pedicellate spikelet as large as the sessile spikelet or much smaller, often asymmetrical, callus obtuse, situated at the concave top of the internode; first glume chartaceous to coriaceous, convex to concave, laterally 2-keeled, sometimes winged, second glume +/- awned.
first floret staminate, with a palea; second lemma bifid, the midnerve usually prolonged between the teeth into a glatrous awn; palea similar to lemma in size, hyaline, 2-keeled.
Stamens 3.
Fruit:
Caryopsis oblong to lanceoloid; dorsally compressed.
Ploidy:
Habitat:
Elevation Range: