Abstract: The present study was carried out to find out the inter- and intra-specific relationships in the genus Camellia. Isozymes of peroxidase, esterase and acid phosphatase in leaf blades of Camellia species, mainly C.japonica, C.sasanqua and C.sinensis, were investigated by polyacrylamide gel electrofocusing method. Zymobcrram patterns detected in these enzymes were not species-specific. Many different zymograms were found within a single species, some of which were in common with other species (Table 2). Some bands common to all species were also detected in each enzyme species (Fig.1). In acid phosphatase isozymes, distinct differences among species were not observed. Data obtained were treated by the technique of pattern analysis (HAYASHI 1956) to obtain an integrated picture, because the assortment of species by zymograms was difficult due to the wide variation within the species (Fig.2). In the scatter diagrams for peroxidase, distribution areas of C. sinensis, C.japonica and C. wabiske were overlapped and that of C, sasanqua was placed distantly from them. On the other hand, in the scatter diagrams for esterase, distribution areas of C.japonica and C.sasan-qua were overlapped and that of C, sinensis was placed distantly. Therefore, it was con-sidered that the evolutionary trend of each enzyme species was independent. The measure of divergence (Table 3) showed a similar trend to that obtained by the pattern analysis.