Flavoparmelia caperata (images of British lichens)

Thallus large, foliose, grey when dry, distinctively yellow-green when wet, surface typically with transverse wrinkles and laminar soralia; apothecia rare, with red-brown discs and sorediate, thalline margins. Widespread, conspicuous and locally common on trunks of deciduous trees and on other, generally base-poor, substrates, scarcer in central and northern Scotland.

Refs: Smith et al. (2009), 404; Purvis et al. (1992), 428 (as Parmelia caperata); Dobson (2005), 174-175 (photo); Dobson (2011), 181 (photo); Jahns (1983), 194-5 (photo, as Parmelia); Allen (2007), 37 & 40 (photos); Whelan (2011), 95 (photo); van Haluwyn et al. (2009), 106-7 (photos); van Herk & Aptroot (2004), 180-181 (photo); Holien & Tønsberg (2008), 51 (photo); Nordic Lichen Flora (2011) 4: 54, 155 (photo); Thor & Arvidsson (1999), 176, 267 (photo); Arup et al. (1997), 180 (photo); Wirth (1995), 2: 639 (photo), 644 (as Parmelia); Wirth et al. (2004), 101 (photo, as Parmelia); Frahm et al. (2010), 105 (photo), 106; Brodo et al. (2001), 317 (photo); Hinds & Hinds (2007), 250-1 (photo); Walewski (2007), 107 (photo); Lichen Atlas of the British Isles 1: 987 (1995) (as Parmelia).

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Images of British Lichens