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Fern antheridia (detail)

Legend:

A  upper view
1  spermatogenous tissue
2  prothallium
2  side view

English name: non-descript
Scientific name: non-descript
Familia: Filicopsida
Classis: Filicopsida
Phylum: Pteridophyta
Regnum: Plantae

In the antheridia spermatides are formed by mitotic divisions