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Images of British Lichens
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); Dobson (2011), 218-19 (photo); Wirth (1995), 1: 458-459 (photo); Wirth et al. (2004), 253 (photo); van Herk & Aptroot (2004), 200-201 (photo).
Frequently parasitised by Arthonia apotheciorum, which blackens the apothecia. |
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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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© A.J. Silverside
Uploaded March 2008, last updated November 2011
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