Images of British Lichens
Melanelixia fuliginosa (Fr. ex Duby) O.Blanco et al.
(= Melanelia fuliginosa (Fr. ex Duby) Essl. subsp. fuliginosa; Parmelia glabratula (Lamy) Nyl. subsp. fuliginosa (Fr. ex Duby) Laundon)
Thallus dark to blackish brown, shining, older parts becoming clothed with dense, velvety, cylindrical to branched-coralloid isidia, which leave white scars when rubbed off; apothecia occasional, with red-brown discs and pale, incurved, isidiate margins and underside. Generally on siliceous rocks, widespread and locally common.
Refs: Smith et al. (2009), 571 (as Melanelixia fuliginosa subsp. fuliginosa); Purvis et al. (1992), 434 (as P. glabratula subsp. fuliginosa); Dobson (2005), 263 (photo, as Melanelia fuliginosa subsp. fuliginosa); Dobson (2011), 267 (photo, as Melanelixia fuliginosa subsp. fuliginosa); Valcárcel et al. (2003), 270-1 (photo, as P. glabratula subsp. fuliginosa); Wirth, Hauck & Schulz (2013), 2: 728 (photo), 730; Moberg & Holmåson (1984), 90 (photo, as P. glabratula var. fuliginosa); Nordic Lichen Flora (2011) 4: 73, 159 (photo, printed too dark); Stenroos et al. (2011), 272 (photo, as Melanelixia fuliginosa subsp. fuliginosa); Lichen Atlas of the British Isles 1: 998 (1995) (as P. glabratula subsp. fuliginosa).
M. glabratula has often been considered a subspecies of M. fuliginosa but recent work has confirmed it is is better treated as a separate species (Arup & Sandler Berlin (2011), Lichenologist 43: 88-97). It is green to warm brown, usually less densely isidiate, and occurs mostly on trees.
|On siliceous tombstone, Shawbury, Shropshire, April 2012.|
|On granite erratic boulder, Shap, Lancashire, April 2012, thallus with apothecia.|
|Coastal wall, Bettyhill, West Sutherland, August 2006.|
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© A.J. Silverside
Uploaded March 2008 (as Melanelia fuliginosa subsp. fuliginosa), last updated September 2013