Abstract: It was observed that anthers of Paeonia lactiflora cultivar “Da-Fu-Gui” produced dimorphic pollen grains, i.e. the normal pollen garins and anomalous pollen grains, frequencies of which were 75.8% and 24.2% respectively. Some of the anomalous pollen grains carried out extra divisions (in vivo) and so the multinueleat or multicellular pollen grains were formed. It seem to indicate that there are several different pathways including asymmetric and symmetric divisions and fusion of the nuclei in the androgenesis.