Images of British Lichens
Toninia thiopsora (Nyl.) H.Olivier
Thallus of usually convex aggregations of proliferating granules, pale to brown-yellow, testing orange with bleach (sodium hypochlorite); apothecia lecideine, black. On exposed, siliceous boulders and rock faces, local but no doubt under-recorded in western Britain.
Refs: Smith et al. (2009), 902; Purvis et al. (1992), 608 (as T. pulvinata).
|On boulder, Beinn Airein, Isle of Muck (BLS meeting), July 2012|
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Uploaded July 2012