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Images of British Lichens
Caloplaca alociza (A.Massal.) Mig.
Thallus thin, grey, or immersed in the rock surface, often bounded by a black prothallus; apothecia with thick margins, black but usually covered by a blue-grey pruina, set in the rock surface and becoming slightly emergent at maturity. Very local on sunny, hard, limestone rocks in Wales and western England.
Refs: Smith et al. (2009), 252; Purvis et al. (1992), 145; Dobson (2005), 95-6 (photo); Dobson (2011), 104 (photo); Lichen Atlas of the British Isles 6: 233 (2001). |
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| On coastal limestone, Stackpole, Pembrokeshire, May 2009 |
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Uploaded July 2009, last updated November 2011
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