Mycoblastus thallicolus Trevis.

Synonyms: Lecidea thallicola Massal. (Ric. p. 78)
Localirty of collection: Supra thallum Parmeliae caperatae in nemore Montello parasitica.
Catalogue ID: MSNVE-24998

All images have been taken by Dr. Maria Zardini. They are property of the Natural History Museum of Venbice, and are distributed under a CC BY licencse.