Gyalecta derivata (Nyl.) H. Olivier

Selection criteria. Country: British Isles. Associated organism: any

Number of records. 2. Locations. state not noted. Associated organism. Fraxinus sp. (bark). Literature. Cannon, Hawksworth & Sherwood-Pike (1985); Hawksworth, James & Coppins (1980) page(s) 42.