Previous page Next page
 
lastdragon.org

Images of British Lichens



Aspicilia calcarea (L.) Mudd
 
(= Circinaria calcaria (L.) A.Nordin, S.Savić & Tibell)


Thallus a chalky white (to pale blue-grey), smooth to cracked-areolate crust, margin well-defined, usually with radial cracking; apothecia set in the thallus, with black discs, or initially grey-pruinose, one or more per areole. On hard limestone, often common and forming conspicuous, large, circular patches. Fletcher et al. (in Smith et al., 2009) state that it has been over-recorded on concrete in urban areas, such records generally being referable to A. contorta subsp. hoffmanniana.

Refs: Smith et al. (2009), 184; Purvis et al. (1992), 98; Dobson (2005), 73 (photo); Dobson (2011), 79 (photo); Whelan (2011), 51 (photo); Wirth (1995), 1: 147, 149 (photo); Wirth et al. (2004), 246 (photo); Wirth, Hauck & Schulz (2013), 1: 190, 368 (photo, as Circinaria calcarea); Moberg & Holmåson (1984), 110 (photo); van Herk & Aptroot (2004, 2013), 66-7 (photo).

FGBI: http://fungi.myspecies.info/all-fungi/circinaria-calcarea

 
Aspicilia calcarea
Aspicilia calcarea, close view
Limestone pavement with Aspicilia calcarea, Perthshire
On limestone pavement, Schiehallion, Perthshire, April 2003
 
Aspicilia calcarea
Aspicilia calcarea, close view
On coastal limestone rocks, Sand Bay, Somerset, February 2010 (BLS meeting)


Previous page   Next page



Lichens HOME PAGE | Index of Species | Conditions of Use and e-mail contact | References | Site Home Page


© A.J. Silverside
Uploaded March 2008, last updated January 2016 (first hosted at www-biol.paisley.ac.uk, December 2006)