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Alan Silverside's Lichen Pages
Lecanora albescens (Hoffm.) Branth & Rostr.
Thallus thick, white, cracked-areolate, apothecia crowded, with thick margins and pinkish brown discs, usually white-pruinose; on sunny faces of calcareous rocks and concrete, common in England, more local in Wales and Scotland.
Refs: Smith et al. (2009), 476; Purvis et al. (1992), 298; Dobson (2005), 213 (photo); Wirth (1995), 1: 458-459 (photo); van Herk & Aptroot (2004), 200-201 (photo).
Photograph: Wicken Fen, Cambridgeshire, April 2007 (on the base of the wind-pump, where it has been a
rapid re-colonist, following loss of the lichen community after application of preservative to the woodwork)
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Uploaded March 2008, last modified June 2010
