Pseudocyphellaria crocata (images of British lichens)

A moderately large, foliose lichen, brown to red-grey, to grey-blue when damp, with conspicuous, yellow marginal and laminal soralia, the latter arising from a net-like development of small ridges and cracks, underside with yellow pseudocyphellae; apothecia small, very rare. A high-Atlantic species of the extreme west, mostly in west Scotland, on mossy trunks and rocks in humid situations.

Refs: Smith et al. (2009), 760; Purvis et al. (1992), 507; Dobson (2005), 369-70 (photo); Dobson (2011), 373 (photo); Jahns (1983), 244-5 (photo); Holien & Tønsberg (2008), 116 (photo); Nordic Lichen Flora (2011) 4: 82, 203 (photo, dry); Brodo et al. (2001), 594 (photo); Lichen Atlas of the British Isles 3: 1195 (1998).

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Images of British Lichens