Their reduced gametophytes developed from megaspores retained within the spore-producing organs (megasporangia) of the sporophyte, a condition known as endospory.
Gametofit ipun sané mareduksi nglimbak saking megaspora sané kagenahang ring tengah organ ngasilang spora (megasporangia) saking sporofit, kahanan puniki kabaos endospora.