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Caloplaca chrysodeta (Vain. ex Räsänen) Dombr.
 
(= Leproplaca chrysodeta (Vain. ex Räsänen) J.R.Laundon)


Thallus dull- to mustard- or brownish-yellow, greener when damp, effuse, leprose (powdery), with little or no white medulla, no cortex nor any defined, lobed margin, granules globose, about 100µm in diameter (Fletcher & Laundon, in Smith et al., 2009); apothecia unknown. Widespread, on shaded and shelltered, base-rich rock-faces. (Compare Chrysothrix chlorina.)

Refs: Wilk (2012), 19 (photo), 34-6; Smith et al. (2009), 258; Purvis et al. (1992), 349 (as Leproplaca); Dobson (2005), 245 (photo, as Leproplaca); Dobson (2011), 107 (photo); van Herk & Aptroot (2004, 2013), 236-7 (photo, as Leproplaca); Arup et al. (1997), 169 (photo); Thor & Arvidsson (1999), 241 (photo); Lichen Atlas of the British Isles 6: 263 (2001).

FGBI: http://fungi.myspecies.info/all-fungi/caloplaca-chrysodeta

 
Caloplaca chrysodeta
Caloplaca chrysodeta
On shaded, basalt rockface, Smeaton, East Lothian 2011


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© A.J. Silverside
Uploaded February 2014, updated January 2016