Pertusariaceae Ochrolechia arborea Specimen on Calluna confirmed by Brian Coppins. 2nd English record Chemical results: Thallus K-, C-. Soralia K-, C+ red, KC+ red, P-. UV+ strong yellow or orange Rare, on acid-barked Pinus twigs and Calluna stems in NE Scotland. Recorded from Calluna stems and rock on Studland Heath and on wood, Pamphill, Dorset. BLS conservation evaluation: NT NR Thin, often immersed thallus, whitish to pale grey. Discrete, crater-like soralia, initially +/- circular, the soredia green-grey or pale yellow. Apothecia are unknown. Similar: O. androgyna. C+ red, KC+ orange-red, UV-

Ochrolechia arborea
On Calluna, ironstone and wood. Dorset. March and April 2013 and January 2016