Ramalinaceae Lecania erysibe Growth type crustose. Chemical results negative Common on nutrient-enriched bricks, walls, church memorials and asbestos-cement. Occasional on decaying wood. Sometimes host to Intralichen lichenum Very variable. The grey or greenish-brown thallus can be thin or cracked and areolate, scurfy and often densely blastidiate. Usually fertile with small orange-brown to blackish discs, the thin, paler margins becoming excluded. Spores 1-septate, 9-16 × 3-5 µm. Microscope photograph below. Similar: Lecania rabenhorstii, pruinose apothecia. Lecania turicensis, thallus and apothecia pruinose

Microscope photograph

Lecania erysibe
Studland and Canford Magna, Dorset. January 2015 and 2016