Investigated in the present work were development of microspores and formation of male gametes in Paeonia jishanensis T. Hong et W. Z. Zhao. Its anthers are 4 sporangiate; structure of anther wall is of the Dicotyledonous type, with glandular tapetum; cytokinesis at meiosis of microspore mother cells is simultaneous; tetrads are mostly tetrahedral, less frequently isobilateral, and mature pollen grains are 2 celled. The overall observation on formation of microspores and development of male gametes made i...