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Images of British Lichens



Lecanora polytropa (Hoffm.) Rabenh.


Thallus pale ochre yellow or yellow-green to brown, diffuse-granular to continuous and areolate, soredia absent; apothecia usually crowded, discs yellowish to green-brown, sometimes ± translucent green (but then compare L. intricata), smooth and appearing waxy, convex when mature. Widespread and generally very common on siliceous rocks and walls, also on worked wood.

Refs: Smith et al. (2009), 493; Purvis et al. (1992), 311; Dobson (2005), 227, 228 (photo); Dobson (2011), 231 (photo); van Herk & Aptroot (2004, 2013), 218-219 (photo); Valcárcel et al. (2003), 216-7 (photo); Wirth (1995), 1: 454, 455 (photo); Wirth et al. (2004), 211 (photo); Wirth, Hauck & Schulz (2013), 1: 579, 606 (photo); Moberg & Holmåson (1984), 114 (photo); Hansen & Anderson (1995), 95 (photo); Brodo et al. (2001), 387 (photo); Pope (2005), 52 (photo); Thomson (1997), 298-300 (photo).

FGBI: http://fungi.myspecies.info/all-fungi/lecanora-polytropa

 
Lecanora polytropa
Lecanora polytropa, enlarged
On stonework of bridge in town centre, Paisley, Renfrewshire, June 2007
 
Lecanora polytropa
Lecanora polytropa, enlarged
On stonework of old bridge, Kindrogan, Perthshire, March 2008
 
Lecanora polytropa
Wooden bench, Arbroath, Angus, April 2002


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