This work deals with the study of the morphological development and sexual expression of the gametophyte of Polypodium feuillei. Multispore cultures on mineral agar were used to sow spores. In less than three weeks vigorous germination was observed, with percentages of germination of 78%. Which grows for about two weeks. followed by a laminar phase. Ten weeks after sowing, prothalli exhibit a cordate-winged form before reaching maturity and bear abundant hairs in the marrgin of the wings and in the abaxial surface of the lamina. This model of ontogeny is of Drynaria type. At sexual maturity about 25 weeks after sowing P.feuillei develop first female gametophytes, which have more vigorous growth than the male ones. Only a few prothalli become bisexual.