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Images of British Lichens


Imshaugia aleurites (Ach.) S.L.F.Meyer


Thallus pale grey, lustrous, lobes adpressed to the substrate, surface becoming covered in grey, eroding isidia; widespread but very local, on acid-barked trees, fences and peat. Easily confused with Parmeliopsis hyperopta, which lacks isidia but has similar-looking soredia initially formed in convex soralia.

Refs: Smith et al. (2009), 444; Purvis et al. (1992), 439 (as Parmeliopsis aleurites); Dobson (2005), 197 (photo); Dobson (2011), 202 (photo); van Haluwyn et al. (2009), 108-9 (photo); van Herk & Aptroot (2004), 194-195 (photo); Wirth (1995), 1: 434-5 (photo); Frahm et al. (2010), 110-11 (photo); Moberg & Holmåson (1984), 97 (photo, as P. aleurites); Holien & Tønsberg (2008), 61 (excellent photo!); Nordic Lichen Flora (2011) 4: 65, 157 (photo); Brodo et al. (2001), 361-362 (photo); Hinds & Hinds (2007), 280 (photo); McCune & Geiser (2009), 163 (photo).

 
Imshaugia aleurites
Imshaugia aleurites
On pine railing of old bridge, Mar Estate, Aberdeenshire, April 2008


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Uploaded August 2009, replacing previous page, last updated December 2011 (previous page first hosted at www-biol.paisley.ac.uk, January 2003)