Order: Lecanorales       Family: Lecanoraceae Species: Lecanora helicopis Rim lichen Growth type crustose. Photos: On coastal wall. Courtmacsherry, Cork, SW Ireland. Identification needs confirming Very variable. Thallus grey to brownish-grey, slightly warted or smooth and cracked, prothallus dark bluish-grey or whitish. Dark brown apothecia with margins becoming darker and excluded. Coastal, found on shaded siliceous rocks above HWM. Chemical reactions negative.

Lecanora helicopis on church wall. March 2009