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.

摘要同型孢蕨类的孢由同自交、交两类育系统或以无生殖的方式产生，交又分为自交和交两种方式。