马通科植物化石Phlebopteris(异脉蕨属 )在我国中生代地层中分布较广 ,但对其生殖器官构造研究甚少 .根据光学显微镜和扫描电子显微镜的观察结果 ,首次描述和报道鄂西早侏罗世香溪组一种马通科植物———水龙骨型异脉蕨 (PhlebopterispolypodioidesBrongniart)的生殖器官微细构造 ,揭示其孢子囊群、孢子囊、环带细节以及原位孢子特征 ,与有关分散孢子化石和现生马通科孢子进行比较与讨论 . Phlebopteris is widely distributed in the Mesozoic strata in China, but its reproductive organ structure is rarely studied.First, according to the observation results of light microscope and scanning electron microscope, Luo Shi Xiangxi group a species of the Staphylococcus - water keel phyllodes fern (PhlebopterispolypodioidesBrongniart) reproductive organs microstructure revealed its sporangia, sporangia, annular zone and in situ spore characteristics of the spores related to the dispersion of fossils And the current Health Section through the spores were compared and discussed.