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子自、异子两类育系统或以无生殖的方式产生,异子又可分为异子自和异子异两种方式。