Fuscopannaria mediterranea (images of British lichens)

Thallus consisting of small, olive-green to brown or blue-grey squamules, margins erect and edged with grey or violet-grey soralia; apothecia with brown discs, appearing sunken in the thallus, said to be unknown in Britain but reported in the Lichen Atlas (see below). Northern and western Britain, scarce and very local, on mossy trunks in old, sheltered woodland.

Refs: Smith et al. (2009), 412; Purvis et al. (1992), 420 (as Pannaria mediterranea); Nordic Lichen Flora (2007) 3: 103, 180 (photo); Holien & Tønsberg (2008), 108 (photo); Arup et al. (1997), 225 (photo, as Pannaria); Thor & Arvidsson (1999), 296 (photo), 392 (as Pannaria); Puntillo (1996), plate 28 (photo, as Pannaria); McCune & Geiser (2009), 129 (photo); Lichen Atlas of the British Isles 4: 978 (1999) (as Pannaria).

lastdragon.org

Images of British Lichens