Abstract: Phellodendron amurense Rupr. is a dioecious tree with abortive carpels in the stuminate flower and abortive stamens in the pistillate flower.The anther wall conforms to the basic type.The tapetum,of which each cell contains 2 or more nuclei in the later stages,is the glandular type.The cytokinesis of the microspore mother cells in meiosis is the simultaneous type.The microspores are arranged in tetrahedral tetrad.The mature pollen grains are of the 2-celled and 3-celled types.The ovary is 5-locular.The placentation is axile.The ovule is biteguminous,crassinucellate and anatropous.The female archesporium is multicellular.The megaspore tetrad is linear arrangement of occassionally T-shaped.

Key words: Phellodendron amurense, Embryology