Abstract: This paper studies the megasporogenesis, microsporogenesis and evelopment of female and male megasporogenesis by way of paraffin wax of Hem eroca llis citrine Baroni. The results are as follows: The development of anther wall follows Monocotyledonous type. Successive cytokinesis in microspore mother cell accompaniesmeiosis to produce tetrahedral tetrad as well as medianly zygomorphic tetrad. Ellip soidal pollen grains are 2-celled when shed, with one germinal furrow. At this time, the nucleus in generative cell p resent
the state of p rophase ormetaphase of mitosis. Ovule is bitegminous, temuinucellatae and anatropous. The archesporial cell below nucellus ep iderm functions directly as the megaspore mother cell. The chalazal megaspore of linear tetrad develop s into a Polygonum type embryo sac. Recorded relative development stage of pistil and stamen. In mature embryo sac, antipodal cell degenerates early. The main characteristics of the development of embryo sac in this species are that synergidswithout crook are abounded in filiform apparatus and there is no eminent vacuole in central cell.

Key words: Hemerocallis citrine Baroni, Microsporogenesis, Male gametophyte, Megasporogenesis, Female gametophyte