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Alan Silverside's Lichen Pages
Peltigera collina (Ach.) Schrad.
Upper surface of fresh thallus grey-brown to blue-grey, grey-brown to grey when dry, smooth to minutely scabrose, margins undulate and densely sorediate; lower surface white-tomentose, with small, simple rhizines and brown veins. Local in the north and west, on mossy trunks and rocks, generally in old forest.
Compare Nephroma parile (undersides of lobes lacking veins and rhizines); Sticta limbata (thalli of single lobes, undersides of lobes with cyphellae and lacking veins and rhizines).
Refs: Smith et al. (2009), 667; Purvis et al. (1992), 447; Dobson (2005), 316 (photo); Jahns (1983), 238-239 (photo); Nordic Lichen Flora (2007) 3: 116, 193 (photo); Moberg & Holmåson (1984), 174 (photo); Holien & Tønsberg (2008), 123 (photo); Wirth (1995), 2: 678, 681 (photo); Hansen & Anderson (1995), 49 (photo); Brodo et al. (2001), 507, 508 (photo); Vitikainen (1994) 32-35 (photo).
Wet material on Goat Sallow (Salix caprea), Kindrogan, Perthshire, March 2008
On mossy boulder, Glen Tilt, Perthshire, April 2008
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Uploaded May 2008, last modified June 2010
