intra-

Homosporous ferns produce sporophytes by intra gametophytic selfing, inter gametophytic mating, or apogamy.Gametangium ontogeny, genetic load, and ploidy affect the mating system of each species.

摘要同型孢子蕨的孢子体可经由同子体自交、异子体交系无生殖的方式产生，异子体交又可分为异子体自交和异子体异交种方式。