Pteridophytes
Selaginella helvetica (after Pteridophyta before Gymnosperms)
Prothallus [Gametophyte]
Aspidium filix Sporangia
Pteridophyte Sporeling
Antheridia and Sperm
Gametophyte Development
Sporangium Development
Archegonia
Selaginella megaspore (after Pteridophyta before Gymnosperms)
