Images of British Lichens
Parmotrema crinitum (Ach.) M.Choisy
(= Parmelia crinita Ach.)
A medium sized, foliose species with contorted and ragged, whitish or pale blue-grey or green-grey lobes, with scattered and clustered, cylindrical to coralloid isidia and black cilia on the surfaces and margins, soralia absent, under-surface black, with unbranched rhizines, browner and lacking rhizines near the margins; apothecia rare. Western Britain, also extending along and near the south coast, on rocks, coastal cliffs and mossy trunks, particularly in ancient woodland.
Refs: Smith et al. (2009), 662; Purvis et al. (1992), 432 (as Parmelia); Dobson (2005), 310-11 (photo); Dobson (2011), 311 (photo); Jahns (1983), 194-5 (photo, as Parmelia, printed with blue colour cast in my copy); Whelan (2011), 123 (photo); van Haluwyn et al. (2009), 60-61 (photo); Nordic Lichen Flora (2011) 4: 95, 164 (photo, dried, browned material); Holien & Tønsberg (2008), 58 (photo); Wirth (1995), 2: 645, 675 (photo); Wirth, Hauck & Schulz (2013), 2: 806, 819 (photo); Frahm et al. (2010), 126 (photo); Hinds & Hinds (2007), 349-50 (photo); Brodo et al. (2001), 494 (photo); McCune & Geiser (2009), 232 (photo); Lichen Atlas of the British Isles 1: 989 (1995) (as Parmelia).
|On cliffs, Isle of Muck (BLS meeting), June 2012|
|On mossy oak (Quercus) trunk, Ardilistry, Islay (BLS meeting), May 2011.|
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Uploaded July 2012, updated September 2013