<正> Croton yunnanensis W. W. Smith var. megadontus W. T. Wang, var. nov. A var. yunnanensis differt folis margine irregulariter dentatis, dentibus usque ad 3.5—4 mm longis. Sichuan (四川): Yanyuan (盐源) Guabie (瓜别), alt. 1800m, 28 Jul. 1983, Expcd. Qingzang (青藏队) 83-12530 (holotypus, PE; isotypus, KUN); Kangding (康定), Wasi (瓦斯), alt. 1900 m, 31 Maj. 1974, Qin Zi-sheng (秦自生)6134。