The present studies deal with the sibship of the three taxa of the genus Eryobotrya by using Karyotype and isozymes analyses. The relatively similar somatic karyotypes of the three taxa, which may be the cytological basis of hybridization among them, make clear that they are closely related taxa. But the asymmety of E. japonica is 3A type, E. prinoides is 2A type, and that of E. daduheensis is either 3A type or 2A type. The results ...