glabrous; rhizome (seen) 2 in. long, horizontal, thick; stem 18–30 in. long, obtusely trigonous at the top; leaves 3/4 the length of the stem, 1/6– 1/4 in. broad, transversely lineolate, in dried examples involute into a tube, many-striate, without keel; bracts 4–6, up to 10 in. long, similar to the leaves; rays of umbel 7–9, up to 3–4 in. long, but very unequal, with a condensed corymb of close spikes at the apex of each; spikelets 1/2 by 1/10 in., compressed, hard, dull chestnut-red, maturing about 10 nuts; glumes elliptic, obtuse, many-striate; keel obscure, paler, hardly excurrent; nut 3/5 the length of the glume, trigonous, narrow-oblong; style not 1/3 the length of the nut, branches 3 linear, shortly exserted from the glume. null
