2021 年 72 巻 3 号 p. 289-292
A new forma, Gomphostemma chinense f. purpureum (Lamiaceae) from Mount Yunkai, Guangdong, China, is described. The new forma is distinguished from G. chinense in its purple-colored flowers. It is currently known only from Mount Yunkai, growing sympatrically with G. chinense f. chinense in the same area, at an altitude of 1,134–1,629 m.