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Diploschistes gypsaceus (Ach.) Zahlbr.


Thallus thick, crustose, cracked to more or less areolate, pale grey but densely white-pruinose; apothecia with black, pruinose, sunken discs and thick margins. Widespread but rare, on shaded, damp, hard, calcareous rocks.

Refs: Smith et al. (2009), 380; Purvis et al. (1992), 237; Dobson (2005), 166; Dobson (2011), 172 (photo); Wirth (1995), 1: 379; Schumm (2011), 190-193 (photos).

 
Diploschistes gypsaceus
On damp, limestone rockface, Braemar, Aberdeenshire, April 2002
 
Diploschistes gypsaceus
Diploschistes gypsaceus, enlarged view
On damp, limestone rockface, Braemar, Aberdeenshire, March 2008


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© A.J. Silverside
Uploaded March 2008, last updated August 2013 (first hosted at www-biol.paisley.ac.uk, January 2003)