th4957's picture

Crustose lichen

Observed: 7th December 2011 By: th4957
S159 Neighbourhood Nature - current student
th4957’s reputation in Fungi and Lichensth4957’s reputation in Fungi and Lichens

on an exposed dry stone wall, northern snowdonia


Caution: Do NOT use iSpot to identify fungi to eat!

Some fungi are very poisonous so a mistaken ID could have serious consequences.

    Likely ID
    Map Lichen (Rhizocarpon sp.)
    Confidence: It's likely to be this, but I can't be certain.
Species interactions

No interactions present.


AlanS's picture

Agreed about the yellow-green species, but ...

The yellow-green species is indeed R. geographicum, and if you put that up as the ID, others of us could agree with it.

I doubt the other is R. hochstetteri - the extensive orange staining from iron oxide deposition is unlikely in this species. Could be Lecidea lithophila, as in your related observation.