Tufted perennials, sometimes rhizomatous, stoloniferous, or tussock-forming. Culms scapose or few-noded. Leaves ligulate, blade usually reduced in the cauline leaves. Inflorescence (compound-) anthelate or reduced to a single spikelet, fruiting spikelets sometimes drooping. Primary bracts mostly small, rarely leaflike. Spikelets with few to many spirally arranged deciduous glumes, each subtending a flower. Flowers bisexual. Bristles l0-many, extremely elongating after anthesis, silky, deciduous with the fruit. Stamens 1-3. Style 3-fid, style base not distinct, not or slightly thickened, ± persistent. Achene obovate to oblong, trigonous, beak short to long, surface smooth.
About 20 spp.
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