AbstractA total of 22 population samples of three endemic species ofCallicarpain the Bonin Islands (the Chichijima Islands and the Hahajima Islands) were examined for nine leaf characters to clarify the present status of morphological variations. Results showed that three species are distinetly recognizable and have their own patterns of variation.Callicarpa glabraandC. nishimuraewere relatively less variable and adapted to limited habitats only in the Chichijima Islands. Thus these species were regarded as specialized species.C. subpubescenswas more variable than the above two species and distributed widely in both of the two island groups. This species was morphologically differentiated between the two island groups. In the Hahajima Islands where two other species were not distributed, several plants ofC. subpubsecenswere similar toC. glabra.The populations ofC. subpubescensin the Hahajima Islands were inter‐populationally more variable than those in the Chichijima Islands.C. subpubescensoccupied various habitats within the Bonin Islands and was regarded as a diversified specie