Abstract: Basing on the pollen morphology of 22 Asian species, 17 from China, of PhylIanthus, 10 pollen types are recognized and described. Transformations of pollen type in this genus from a tricolporate one to a peripor(or) ste one are in succession and through 3 different pathways. It is interesting enough that the “successiformy” and “spiralizaton” pattern are all occurred.

Key words: Intrageneric variation, Phyllanthus, Pollen type