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.

摘要同型蕨类可经由同自、异两类育系统或以无生殖方式产生，异又可分为异自和异异两种方式。