The pollen morphology of all 5 species of the genus Dimocarpus was studied. General pollen morphology is rather uniform and only one main type is present, which could be subdivided into 7 subtypes on minor differences in shape, aperture, and exine pattern. Intraspecific variability is present in some species. Morphological trends are established and related to the taxonomic subdivision. Taxa which are macromorphologically advanced appear to have developed also derived pollen subtypes.