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Icmadophila ericetorum (L.) Zahlbr.


Thallus a green to glaucous, granular crust; apothecia conspicuous, becoming convex, pink to pale pink-orange, sessile to shortly stalked (then more or less mushroom-shaped); on peat banks and acidic, rotted wood. Upland and northern Britain, rare elsewhere.

Refs: Smith et al. (2009), 442; Purvis et al. (1992), 277; Dobson (2005), 196 (photo); Dobson (2011), 201 (photo); Jahns (1983), 210-211 (photo); Wirth (1995), 1: 433 (photo); Whelan (2011), 102 (photo); Wirth et al. (2004), 180 (photo); Wirth, Hauck & Schulz (2013), 1: 538 (photo); Moberg & Holmåson (1984), 135 (photo); Holien & Tønsberg (2008), 193 (photo); Stenroos et al. (2011), 236 (photo); Brodo et al. (2001), 360-361 (photo); Pope (2005), 49 (photo); Thomson (1997), 249-50 (photo); Walewski (2007), 25 (photo).

The apothecia are usually ± sessile, but can be shortly stalked, and then can be confused with Dibaeis baeomyces. The latter has ± globose apothecia, usually on more conspicuous stalks, and a white thallus (greenish only when wet) that glows bright orange under UV light.

 
Icmadophila ericetorum
On peat-bank, Braemar, Aberdeenshire, April 2002
 
Icmadophila ericetorum
On peat-bank, Braemar, Aberdeenshire, March 2008
 
 
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© A.J. Silverside
Uploaded March 2008, last updated September 2013 (first hosted at www-biol.paisley.ac.uk, January 2003)