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可经由同配子、异配子配两类配系统或以无配生殖的生，异配子配又可分为异配子和异配子异两种。