APHOTOFUNGI

An online educational resource dedicated to the photography of fungi;
mushrooms, toadstools, brackets, cups, plant diseases etc., found
in South-West England, especially Devon and Cornwall, by David Fenwick.

Order Arthoniales (The Lichen Image Gallery)
Family Roccellaceae

Opegrapha
Opegrapha gyrocarpa
Opegrapha species 1 (not O. atra)

Opegrapha gyrocarpa