UK Fungi

Rust on fern

Forums › Forums › Fungi ID requests (post here if you aren’t sure what type of fungus you’ve found) › Rust on fern

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  • December 31, 2024 at 4:16 pm #32970
    adampembs
    Keymaster

      Found today on a fern. If anyone can identify the fern, I’ll probably have an ID :)

      My guess would be Dryopteris dilatata and therefore Milesina kriegeriana

      December 31, 2024 at 5:04 pm #46446
      Lancashire Lad
      Keymaster

        Hi Adam,

        As far as I’m aware, there are only two rusts which affect Dryopteris ferns: – Milesina kriegeriana, and Milesina carpatorum.

        Milesina kriegeriana attacks several Dryopteris species, but Milesina carpatorum only attacks Dryopteris felix-mas

        From your photos, I can’t be certain that your fern is Dryopteris dilatata (as Dryopteris carthusiana is very similar), but I’m pretty certain that your fern isn’t Dryopteris felix-mas, so yes, Milesina kriegeriana must be the rust.

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