Abstract: The morphology an ddevelopment of female flowers of four species in Hippophae were studied.The result shows that four species are similar,and the differneces among them are only in some quantitative characters.It indicates that properties of the species do not obviously appear as yet at the tissue level during the development of female flowers morphology and embryo sac.But the development rhythm or process in four species is differnet.A new asynchronous meiosis of dyad was discovered in hippopae tibetana Schlecht.The archesporial of H.rhamonides have a long time staying.The development of its stigma and pollen is synchronous but the maturity of the embryo sac which requires warmer condition or certain simulants.It is not reasonable to judge the maturing embryo sac of allicable in H.rhamonides according to the state of stigma opening and its secretion.

Key words: Hippophae, Female flower, Morphology, Development