Abstract:Phyllanthodendron petraeum P. T. Li and P. orbicularifolium P. T. Li are two species endemic to Guangxi, China. A series of morphological characters of leaves, disk glands and styles were considered to be important to distinguish them from each other in previous taxonomic literature. However, results from recent examination of herbarium specimens and filed investigations suggested that all the cited characters could not differentiate the two species. We believe that P. petraeum and P. orbicularifolium are conspecific. We therefore reduce P. orbicularifolium as the synonymy of P. petraeum.
