Candelaria concolor (images of British lichens)

Thallus foliose, lobes tufted to layered and palmately spreading, margins budding off spherical yellow soredia; apothecia yellow, said often to have a roughened margin (Dobson). Resembles Xanthoria ucrainica and X. ulophyllodes but does not test crimson-red with KOH. Widespread but local and mainly in the south, formerly declining but now increasing again, mostly on nutrient-enriched bark.

Refs: Smith et al. (2009), 275; Purvis et al. (1992), 159; Dobson (2005), 110 (photo); Dobson (2011), 119 (photo); Jahns (1983), 210-211 (photo); van Haluwyn et al. (2009), 78-9 (photo); van Herk & Aptroot (2004), 108-9 (photo); Holien & Tønsberg (2008), 158; Moberg & Holmåson (1984), 134 (photo); Wirth (1995), 1: 241 (photo); Wirth et al. (2004), 130 (photo); Frahm et al. (2010), 103 (photo); Puntillo (1996), plate 9 (photo); Hinds & Hinds (2007), 140-1 (photo); Brodo et al. (2001), 205-6 (photo); Walewski (2007), 105 (photo).

Photographed in the Netherlands, British photographs pending.

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Images of British Lichens