Perennials, rhizomatous. Culms tufted, 15-30 cm tall, slender. Leaves ca. 1/2 as long as to equaling culm; leaf blade narrowly linear, ca. 0.5 mm wide, apex acuminate. Involucral bracts 2 or 3, glumelike, 0.5-1.8 cm, apex with a longer hairy awn. Inflorescences reduced to a single terminal spikelet, ovoid to oblong-ovoid, 8-13 × ca. 4 mm. Glumes yellowish green with fine brown spots, broadly ovate to oblong-ovate, ca. 4 mm, shiny, 3-veined forming an abaxial slight keel, midvein prominent, apex mucronate. Stamens 3. Style 3-sided, ciliate, basally inflated; stigmas 3. Nutlet with a ca. 0.8 mm stipe, flatly globose, ca. 1.5 mm, 3-sided, very sparsely verruculose. Fl. and fr. Jun-Oct.
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