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.

型孢子蕨类的孢子体可经由配子体、异配子体配两类配系统或以无配生殖的方式产生，异配子体配又可分为异配子体异配子体异两种方式。