Search in gallery Fern sperm - Large (116 Kb) - Scroll down   to information Without 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

http://www.vcbio.science.ru.nl/en/image-gallery/show/labels/PL0012/print/