Perennials. Rhizomes short or well developed and horizontally creeping, woody. Culms grayish green, tufted, 10-65 cm tall, slender, flatly 3-angled, smooth, base thicker, with few leaves. Basal leaves with sheaths only and grayish brown. Leaves apically on culm with a blade, 1/3 or less as long as culm; leaf blade often linear, ca. 1 mm wide, folded. Involucral bracts 2 or 3, shorter to slightly longer than inflorescence, suberect, base slightly broader. Inflorescence a simple or rarely subcompound anthela; rays less than 10 mm. Spikelets solitary, oblong-ovoid, oblong, or narrowly oblong-ovoid, 10-17 × 3-4 mm, terete, densely many flowered, apex acute to rarely obtuse. Glumes grayish brown with dark brown lines at middle, ovate to elliptic, 3-4 mm, submembranous, apically with grayish white hairs, abaxially prominently keeled, margin ciliate, apex obtuse and apiculate. Stamens 3; anthers linear. Style long and flat, basally broader; stigmas 2. Nutlet brown to blackish brown when mature, shortly stipitate, obovoid to broadly obovoid, 1.2-1.5 mm, flatly biconvex, subsmooth. Fl. and fr. Jun-Aug.
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