Cystopteris and Polypody

[JennyS]

Came across these two yesterday:
Diaphanous Bladder-fern, Cystopteris diaphana at last? (Riverbank location where its been recorded from)
Is the Polypody a naturally occurring form and if so does it have a specific name? It was growing mixed in with normal-looking ones on a shady roadside wall.

[Tiggrx]

Originally Posted by JennyS

Came across these two yesterday:
Diaphanous Bladder-fern, Cystopteris diaphana at last? (Riverbank location where its been recorded from)
Is the Polypody a naturally occurring form and if so does it have a specific name? It was growing mixed in with normal-looking ones on a shady roadside wall.

Polypodies occur a wide range of varieties many of which are grown in gardens. A lot of these varieties were originally found in the wild. Your specimen resembles a form from the Semilacerum group but with the addition of a bifid tip. Semilacerum forms are generally of the species Polypodium cambricum (syn. P. australe).

[JennyS]

Thanks Tiggrx