类黑褐穗薹草 lei hei he sui tai cao

Rhizome short, oblique. Culms 20-30 cm tall, trigonous, smooth, clothed at base with brown sheaths. Leaves ca. 1/2 length of culm, blades pale greenish, linear, 2-4 mm wide, flat, margins scabrous, apex acuminate. Lower involucral bracts reduced to shortly bladed or setaceous, longer or shorter than inflorescence, sheathing ca. 4 mm, purple, upper bracts glumelike. Spikes 2 or 3, entirely gynaecandrous, ovate or elliptic, 1-1.5 × 0.8-1.2 cm, with slender pendent peduncles. Female glumes dark purple-red, lanceolate, 5.5-6 × ca. 1.2 mm, 1-veined, upper margins narrowly white hyaline, apex long acuminate. Utricles stramineous at base, dark purple-brown above, shorter than glume, ovate-lanceolate, compressed trigonous, ca. 4 mm, membranous, glabrous, nerveless, base cuneate, apex gradually narrowed to a short beak, orifice smooth, white hyaline, emarginate. Nutlets pale brown, loosely enveloped, elliptic, obtusely trigonous, ca. 1.5 mm, base with a stipe ca. 0.5 mm; style enclosed in utricle, erect, base scabrous; stigmas 3. Fl. and fr. Jul-Aug.

● Alpine meadows, alpine meadows in thickets; 1000-4700 m. Qinghai, Shaanxi, W Sichuan, Xizang.