I found this fern in Huizen (Netherlands).
I came across the following species that are very similar:
Male fern
Scaly fern (rare)
female fern
Bladder Fern (Very Rare)
Stipple Fern (Rare to Very Rare)
Could you please tell me what fern this is?
If you have any questions, you can of course e-mail me.
Asker: Wingchun, 13 years old

Answer
It looks like a male fern (Dryopteris felix-mas), but you actually need a fertile leaf to be 100% sure.
Answered by
Koen Es
Botany
Botanic Garden Meise
Nieuwelaan 38 1860 Meise
Nieuwelaan 38 1860 Meise
http://www.plantentuinmeise.be
.