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Prothallium filament of a fern
![](/public/Final-Images/PL_Final685z_001-050/PL0011_685zFernProthalliumFilamentDetail.jpg)
Legend:
1 formation of prothallium
3 chloroplasts
2 remains of the spore wall
English name: non-descript
Scientific name: non-descript
Familia: non-descript
Classis: Filicopsida
Phylum: Pteridophyta
Regnum: Plantae
Prothallium filament of a fern