细序薹草 xi xu tai cao

Rhizome short. Culms tufted, 30-40 × ca. 0.2 cm, slender, trigonous, subglabrous. Leaves cauline, longer than culms, flat, 4-5 mm wide, hairy along midvein abaxially and later glabrescent, scabrid adaxially; persistent sheaths brown. Involucral bracts leafy, longer than inflorescence branches, long sheathed. Panicle compound, ca. 20 cm, with 3 or 4 distant inflorescence branches; inflorescence branches usually single, oblong, 10-25 × 4-6 mm, loosely 3-8-spiked; peduncles of inflorescence branches tenuous, trigonous, hairy on edges, lowest one to 18 cm, upper ones gradually shorter; inflorescence axes filiform, soft and drooping, acutely trigonous, densely hairy; bractlets glumelike, ovate, ca. 0.8 mm, membranous, apex with awns 3.5-5 mm. Spikes bisexual, androgynous, arising from cladoprophylls, patent, 4-5 mm; male part of spike as long as female part; female part 2-5-flowered; male glumes pale brown with dense brown spots and short lines, lanceolate, 2.5-3 mm, membranous, with 1 midvein, apex acuminate, shortly awned; female glumes pale brown with dense brown spots and short lines, ovate, 2.5-3 mm, membranous, with 1 midvein, apex mucronate. Utricles pale brown with dense brown spots and short lines, narrowly elliptic or lanceolate, trigonous, slightly inflated, 3-3.5 mm, papery, upper part loosely hairy, with 2 to several raised veins, subsessile, apex contracted into beak of medium length, beak slightly shorter than utricle body, orifice minutely 2-toothed. Nutlets yellowish brown at maturity, narrowly elliptic, trigonous, ca. 2 mm, base shortly stipitate, apex not mucronate; style base slightly thickened; stigmas 3.

● Forests; ca. 2100 m. C Yunnan (Kunming).