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Images of British Lichens



Caloplaca decipiens (Arnold) Blomb. & Forssell


Thallus yellow to dull orange, placodioid, variably white-pruinose, lobules convex, with lip-shaped to rounded soralia on lobule margins in the central area of the thallus; apothecia orange, rare. Locally common, more so in eastern Britain, on calcareous stonework, walls and cement, also on coastal rocks in the west, especially limestone, associated with bird perching.

Refs: Gaya (2009), 66, 181 (photo); Wilk (2012), 20 (photo), 44-5; Smith et al. (2009), 261; Purvis et al. (1992), 151; Dobson (2005), 101 (photo); Dobson (2011), 110 (photo); Whelan (2011), 59 (photo); Wirth (1995), 1: 216, 217 (photo); Wirth et al. (2004), 237 (photo); Wirth, Hauck & Schulz (2013), 1: 282, 283 (photo); van Herk & Aptroot (2004, 2013), 94-95 (photo); Moberg & Holmåson (1984), 186 (photo); Stenroos et al. (2011), 84-5 (photo); Lichen Atlas of the British Isles 6: 250 (2001).

 
Caloplaca decipiens
On harbour wall, Nairn, Nairnshire, July 2008
 
Caloplaca decipiens
On mortared wall, with apothecia of Lecanora albescens, Stanhope, Co. Durham, June 2009


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© A.J. Silverside
Uploaded October 2008, last updated December 2013