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Images of British Lichens

Ochrolechia inaequatula (Nyl.) Zahlbr.

Thallus crustose, in rounded patches, thin or granular to rather thick and warted, white or very pale grey, with initially pustular, whitish to pale yellow soralia that coalesce to cover much of the surface, resembling a small variant of O. androgyna but testing orange with Pd (para-phenylenediamine), whereas O. androgyna is Pd-; apothecia unknown in Britain. Generally encrusting mosses or debris, local in exposed, usually upland sites in N. Wales and Scotland.

Refs: Smith et al. (2009), 629; Purvis et al. (1992), 399; Thomson (1997), 433.

Ochrolechia inaequatula
On moss on exposed, basalt, hill summit, Traprain Law, East Lothian, June 2011, shown to me by Brian Coppins

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© A.J. Silverside
Uploaded September 2013