Images of British Lichens
Clauzadeana macula (Taylor) Coppins & Rambold
Crust a dominant, black prothallus, supporting minute (<1mm diam.) pale brown to shining reddish-brown areoles but seeming uniformly black except on close examination; apothecia with thin, thalline margins and black discs, sunk in the areoles (compare Schaereria fuscocinerea). Very local on hard, exposed, generally base-poor upland rocks.
Refs: Smith et al. (2009), 341; Purvis et al. (1992), 213; Wirth (1995), 1: 345; Thomson (1997), 293 (as Lecanora morioides).
|On montane rockface, growing over Rhizocarpon geographicum, Braemar, Aberdeenshire, April 2002|
|On montane rockface, Braemar, Aberdeenshire, March 2008|
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Uploaded March 2008, last modified November 2011 (first hosted at www-biol.paisley.ac.uk, January 2003)