Herbs, perennial, densely cespitose, 20--60 cm, base thickened. Stems compact. Leaves in fans, 15--20 cm; sheaths straw-colored to dark brown, dull, papillate to rugose, minutely scabrous; blade dull green, flattened, plane, 3--12 mm wide, papillate to minutely scabrous, margins minutely scabrous. Inflorescences: scape sheaths exceeded slightly by leaves; scapes straight, linear, terete, distally slightly compressed or broadly oval, to 2 mm, rugulose, minutely scabrous, strongly 2-ribbed, ribs minutely scabrous; spikes prevalently ovoid to ellipsoid, 8--20 mm, apex acute; fertile bracts 5--7 mm, margins entire, apex shape rounded. Flowers: lateral sepals included, dark brown, slightly curved, 5--7 mm, keel scarious, lacerate; petals unfolding in morning, blade obtriangular, 3--3.5 mm; staminodes bearded. Seeds mealy, ellipsoid, 6 mm, lined longitudinally with papillae, less conspicuously cross-lined. 2n = 18.
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