采用形态解剖和石蜡切片法,对空心莲子草雄蕊和雌化雄蕊的形态和结构的发育过程进行了观察.结果显示:(1)在形态上,空心莲子草两性花雄蕊由聚药雄蕊和无药雄蕊构成,二者相间而生成一轮；而空心莲子草雌化雄蕊花的雌化雄蕊由雌化雄蕊和无药雄蕊构成,雌化雄蕊的外形如雌蕊状,其外轮为无药雄蕊,二者前后对应而生,成二轮；(2)在结构上,空心莲子草两性花雄蕊的每个花药具两个花粉囊,花药壁由表皮、药室内壁、中层和绒毡层组成,花粉母细胞减数分裂形成的四分体有四面体型和左右对称型,成熟花粉粒为3核,但后期大量解体,新鲜花粉粒经生活力测定无活性；雌化雄蕊花雌化的雄蕊有柱头、花柱和子房,但子房室内无胚珠状结构,仅为一个空腔.%The morphology structure development of stamen and feminisation stamen of Alternanthera philoxeroides were observed by the methods of morphology anatomy and paraffin section. The results showed that: (1) In the morphology, stamen of bisexual flower of A. Philoxeroides consisted of staminodium and synantherous stamen, which were interval in a wheel; while feminisation stamen of feminisation stamen flower of A. Philoxeroides consisted of staminodium and feminisation stamen, which looked like pistil,staminodium beside the feminisation stamen in the outer wheel. (2)In the structure,each anther of bisexual flower of A. Philoxeroides had two pollen sac,and the anther wall was composed of four layers:epidermis,endothecium,middle layer and tapetum. The tetrads were formed in meiosis of pollen mother cells, which shaped as tetrahedral and bilateral symmetry. The mature pollen was of 3 celled types, which disintegrated at the post-maturation stage. Fresh pollen had no activity through viability determination feminisation stamen of A. Philoxeroides were composed of stigma,style and ovary,however, the locule had no ovule,just a cavity.
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