摘 要 ：对产自云南东南部的木兰科植物一新种粉背含笑Magnolia glaucophylla Sima et H. Yu作了描述和绘图。该新种与棕毛含笑Magnolia fulva (H. T. Chang et B. L. Chen) Figlar接近，区别点在于其叶倒卵形、狭倒卵形或倒卵状椭圆形，侧脉每边19~24条；叶柄无毛；心皮20~26枚，成蓇葖时无毛，果瓣厚4~6 mm。
Abstract:Magnolia glaucophylla Sima et H. Yu, a new species of Magnoliaceae from SE Yunnan, China, is described and illustrated. It is similar to Magnolia fulva (H. T. Chang et B. L. Chen) Figlar, from which it differs by leaf blades obovate, narrowly obovate or obovate-elliptic, glaucous beneath, with 19～24 pairs lateral nerves, petioles glabrous, as well as carpels 20～26, glabrous, valves 4～6 mm thick when fruiting.