454. Carex chui Nelmes, Kew Bull. 3: 108. 1948.
曲氏薹草 qu shi tai cao
Rhizome short. Culms tufted, 5-20 cm tall, slender, trigonous, smooth. Leaves basal, shorter than culm, blades 1-1.5 mm wide, flat, smooth on both surfaces, scabrous on margins, sheathed; sheaths up to 2 cm, obliquely truncate at mouth, membranous on margins; outer sheaths usually splitting to base. Involucral bracts sheathed, lower involucral bract blades linear, longer than spike, upper blades setaceous, shorter than spike; sheaths 5-10 mm, brownish, membranous on margin of mouth. Spikes 3-5, rarely 1 or 2, slightly contiguous, most distance ca. 4 cm; terminal spike male, linear, 5-14 mm; remaining spikes female, narrowly oblong or narrowly cylindric, 8-13 mm, sparsely few flowered. Female glumes yellowish brown, broadly ovate, ca. 2.5 mm, membranous, conspicuously 1-3-veined, apex obtuse or acute, usually muticous. Utricles castaneous, obliquely patent, slightly longer than or equaling glume, broadly elliptic or suborbicular, compressed plano-convex, ca. 2.5 mm, membranous, densely white hispidulous, thinly 7-veined abaxially, base abruptly narrowed into a short stipe, apex abruptly narrowed into a short beak only ca. 0.5 mm, orifice emarginate. Nutlets yellowish, tightly enveloped, broadly elliptic or broadly obovate, compressed biconvex, ca. 1.5 mm, base estipitate; style base slightly thickened; stigmas 2, shorter than utricle. Fl. and fr. Jun-Jul.
● Streamsides; ca. 2500 m. Sichuan (Baoxing).