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Images of British Lichens



Candelariella medians (Nyl.) A.L.Sm.


Thallus placodioid (i.e. a crust but lobulate at the margins), uniformly yellow or with interior more grey, centre granular to isidiate; apothecia yellow, rare. Widespread, more common in the south and east, on hard, nutrient-enriched, calcareous rocks and more especially on concrete and cement.

Refs: Smith et al. (2009), 277; Purvis et al. (1992), 160; Dobson (2005), 112 (photo); Dobson (2011), 121 (photo); Whelan (2011), 66 (photo); van Herk & Aptroot (2004, 2013), 110-111 (photo); Wirth, Hauck & Schulz (2013), 1: 322, 325 (photo).

FGBI: http://fungi.myspecies.info/all-fungi/candelariella-medians

 
Candelariella medians
Candelariella medians, with apothecia
Candelariella medians, with apothecia, close view
On limestone gravestones, Hatfield Broad Oak, Essex, May 2012, lower photographs show apothecia
 
Candelariella medians
On concrete wall, Arbroath, Angus, April 2002
 
Candelariella medians
On harbour wall, Nairn, Nairnshire, July 2008


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