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Tufted, delicate perennial, or possibly annual 50-300 mm high; hygrophyte. Leaf blade to 70 x 0.5-1.0 mm, folded. Inflorescence 15-80 mm long, contracted to open, branches ascending. Spikelet 2-3 mm long; rachilla not produced; glume 3 mm long, acute to acuminate, usually dark purple, keel scaberulous; lemma glabrous, 5-nerved, awnless or awned from middle of back; awn straight; palea ± equal to lemma; callus glabrous to minutely tufted hairy; anther 0.8-1.7 mm long.
Perennial; 0.05-0.30 m high; delicate; tufted. Leaf blades folded; up to 70 mm long; 0.5-1.0 mm wide. Flowers: panicle contracted to open; 15-80 mm long; spikelets 2-3 mm long; branches ascending; rachilla not produced; lemmas 3-5-nerved; glabrous; anthers 0.8-1.7 mm long.
