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.

摘要同型蕨体可经由同体自、异体育系统或以无生殖方式产生，异体又可分为异体自和异体异种方式。