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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).

 
Toninia thiopsora
Toninia thiopsora, enlarged view
On boulder, Beinn Airein, Isle of Muck (BLS meeting), July 2012


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© A.J. Silverside
Uploaded July 2012