Search in gallery Fern sperm - Large (116 Kb) - Scroll down   to information With labels Legend: 1  sperm head 2  flagellum   English name: non-descript Scientific name: non-descript Familia: non-descript Classis: Filicopsida Phylum: Pteridophyta Regnum: Plantae Fern sperm. They develop in the antheridia on the prothallium

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