扇叶薹草 shan ye tai cao

Rhizome stoloniferous, woody. Culms lateral, 40-45 × ca. 0.2 cm, trigonous, loosely pubescent, base with brown sheaths. Leaves basal and cauline; basal leaves 2 or 3 tufted on rhizome node, narrowly elliptic, 20-35 × 3.8-7 cm, glabrous or scabrid on abaxial veins, replicate, base attenuate, apex acuminate; petiole 14-24 cm, folded, glabrous; cauline leaves pale greenish white with dense brown spots and short lines, spathelike, pubescent. Involucral bracts spathelike. Panicle compound, 10- or more branched; inflorescence branches racemose, binate or ternate, 1-3-spiked; peduncles of inflorescence branches tenuous, 2-10 cm, densely pubescent; bractlets glumelike, ovate-oblong, ca. 3.5 mm, densely pubescent abaxially. Spikes bisexual, androgynous, arising from flowerless utriculiform cladoprophylls, oblong, 5-10 mm; male part of spike slightly shorter than female part, with 10 or more flowers; female part 4-10-flowered; male glumes pale yellow laterally with dense spots and short lines, pale green at middle, ovate-lanceolate, ca. 3 mm, membranous, 3-veined, apex acuminate; female glumes similar to male glumes, but loosely pubescent abaxially. Utricles pale yellowish white with brown spots and short lines, obliquely to horizontally patent, elliptic, trigonous, 3-3.2 mm, membranous, glabrous, with many raised veins, base subrounded, apex attenuate into an excurved long beak, orifice obliquely truncate. Nutlets brown at maturity, elliptic, trigonous, 1.9-2 mm; style excurved, base not thickened; stigmas 3.

● Streamsides. Guangxi.