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.

摘要同型孢子蕨类的孢子体可经由同配子体自交、异配子体交配两类配系统或以无配生殖的方产生，异配子体交配又可分为异配子体自交和异配子体异交两种方。