多轮草 duo lun cao

Ophiorrhiza micrantha Drake, J. Bot. (Morot) 9: 214. 1895; Notodontia micrantha (Drake) Pierre ex Pitard; Spiradiclis micrantha (Drake) H. S. Lo.

Herbs, rather fleshy; stems procumbent and rooting on nodes with apical parts ascending. Petiole densely pilosulous-hirtellous; leaf blade drying membranous, elliptic, ovate-elliptic, or lanceolate-oblong, 5-18 × 2.5-8 cm, base cuneate to rounded and often decurrent along petiole, apex acuminate or obtuse; secondary veins 12-18 pairs; stipules caducous, not seen. Inflorescence terminal, ferruginous tomentose, 10-18 cm, many branched; secondary branches arcuate to recurved, mostly scorpioid, with flowers rather densely grouped; bracts reduced. Calyx with hypanthium portion weakly 5-ridged, 0.5-0.7 mm. Corolla white, shortly tubular; tube swollen in lower part; lobes obtuse. Berries subglobose, ca. 1.5 mm in diam.

Shady wet streamsides in forests. Yunnan (Hekou) [N Vietnam].

This species was incorrectly called Polyura geminata J. D. Hooker by Wu (Acta Phytotax. Sin. 6: 294. 1957) in its first report from China, but that was a misidentification. Polyura J. D. Hooker is an accepted genus of Rubiaceae but is not (yet) known from China.