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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.

Melanelixia fuliginosa
Melanelixia fuliginosa
Melanelixia fuliginosa, close view showing isidia
On siliceous tombstone, Shawbury, Shropshire, April 2012.
 
Melanelixia fuliginosa
Melanelixia fuliginosa
On granite erratic boulder, Shap, Lancashire, April 2012, thallus with apothecia.
 
Melanelixia fuliginosa
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