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Perennial herb, tufted, with thickened hard bases, 0.5-0.8 m high. Leaves: sheaths dark brown to blackish, old outer sheaths cancellate; blades narrowly linear, 0.75 mm in diam., C-shaped. Culm nodose, erect, terete, 1.0-1.2 mm in diam. Inflorescence a reduced, slender, erect panicle with a short branch from each of upper few nodes, each sparsely re-branched and bearing a cluster of 2-4 spikelets. Subtending bracts sheathing culm, sheaths dark brown to blackish, extended tip leaf-like, green. Spikelets flattened, lanceolate, 9-11 mm long; flowers 2, bisexual. Glumes: fertile lanceolate, 8.0-8.5 mm long, keel excurrent into minute point. Perianth absent. Flowering time Nov.-Feb. (June. Nutlet elliptic, ± 4.5 mm long, light brown, shining; style base hairy pyramidal, surface hairy towards apex, ± wrinkled, minutely reticulate.
Tufted perennial to 80 cm. Spikelets reddish to dark brown.
