Many studies have been conducted to classify the genus <i>Camellia</i>, yet they have not been entirely consistent. Therefore, doing research on some of the taxonomic systems of the genus <i>Camellia</i> will serve as the basis for the classification and arrangement of recently discovered species into a consistent system. A series of studies based on morphology as well as molecular biology techniques, the classification of pollen spores, and the analysis of leaf anatomy were examined. The systems based on morphological characteristics were inherited and widely recognized, thereby becoming an appropriate method to classify the genus <i>Camellia </i>with representatives in Vietnam.