Notes: Growing on bark.
The chemical reactions are singular and as far as I could see correspond to a single species of Pertusaria growing on bark: P. flavida. However that species is isidiate. Other species living on bark cited in the British Flora that can cause confusion are: Lecanora explallens, Lecanora alboflavida and Pyrrhospora quernea. The latter I know very well and devoted to it some observations. Concerning the to the two species of Lecanora, they are very different from this material. What could be then?
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Created: 2013-04-14 17:04:17 CDT (-0500)
Last modified: 2013-04-14 17:04:19 CDT (-0500)
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