Rhizomes slender. Culms 3-20 cm tall, subterete, clothed at base with brown bladeless leaf sheaths. Cauline leaves as long as or shorter than culm; leaf blade brown, narrowly linear, thickly crescentic in cross section, apex ± obtuse. Involucral bract dark reddish brown, leaflike or glumelike, many veined, apex acute. Inflorescences consisting of 4-7 spikelets arranged in a distichous spike, 0.7-1.7 cm. Spikelets oblong-ovoid, 5-6 mm, 2-or 3-flowered, apex ± obtuse. Glumes elliptic-ovate, ca. 5 mm, 2-or 3-veined, apex obtuse. Perianth bristles usually absent. Stamens 3; anthers 3-4 mm; connective apex ca. 2 mm. Stigmas 2. Nutlet yellowish, shortly stipitate, oblong-ovoid, ca. 3.5 × 1.5 mm, plano-convex, base subrounded. Fl. and fr. Jun-Sep. 2n = 40.
Home