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Images of British Lichens



Pertusaria albescens (Huds.) M.Choisy & Werner


Thallus pale greenish grey to grey, often zoned at the margin, surface with often abundant, often (but not always) clearly delimited, round soralia that lack a bitter taste (compare with P. amara); apothecia rare. Widespread on bark of deciduous trees, rarely on other substrates.

Refs: Smith et al. (2009), 676; Purvis et al. (1992), 450; Dobson (2005), 322 (photo); Dobson (2011), 323 (photo); Whelan (2011), 127 (photo); van Haluwyn et al. (2009), 162-3 (photo); van Herk & Aptroot (2004, 2013), 286-7 (photo); Valcárcel et al. (2003), 288-9 (photo); Wirth (1995), 2: 695 (photo), 697; Wirth et al. (2004), 298 (photo); Wirth, Hauck & Schulz (2013), 2: 843, 852 (photo); Frahm et al. (2010), 85 (photo).

FGBI: http://fungi.myspecies.info/all-fungi/pertusaria-albescens

 
Pertusaria albescens
Taymouth, Perthshire, April 2002


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© A.J. Silverside
Uploaded May 2008, last updated January 2016 (first hosted at www-biol.paisley.ac.uk, January 2003)