1. Actinoschoenus yunnanensis (C. B. Clarke) Y. C. Tang, Abstr. Pap. 30th Anniv. Bot. Soc. China. 130. 1963.
云南星穗莎 yun nan xing sui suo
Fimbristylis yunnanensis C. B. Clarke, J. Linn. Soc., Bot. 36: 247. 1903.
Rhizomes creeping. Culms 12-50 cm tall, slender. Leaves 1/3-1/2 as long as culm; leaf blade 1-1.5 mm wide, sparsely hairy, apex acute. Involucral bracts 2 or 3, leaflike to nearly setaceous, 0.5-2.7 cm, longer than inflorescence, hairy. Inflorescences capitate, 0.8-1.2 cm in diam., with 3-7(-12) spikelets. Spikelets ovoid to narrowly ovoid, 5-7 mm, with 7 or 8 glumes distichous basally and with 4 or 5 basal ones empty. Glumes reddish brown, ovate-lanceolate and boat-shaped, thickly papery, apically hairy. Stamens 3. Style 3-sided, not ciliate, basally inflated; stigmas 3. Nutlet white, obovoid, 1/3-1/2 as long as subtending glume, obtusely 3-sided, reticulation not prominent. Fl. and fr. Jun.
Mountain slopes; 1200-1300 m. Yunnan [N India, Thailand, Vietnam].
D. A. Simpson and T. Koyama (Fl. Thailand 6(4): 342. 1998) treated this as Fimbristylis yunnanensis but noted that its placement was uncertain.