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Alan Silverside's Lichen Pages
Parmelia sulcata Taylor
Thallus foliose, blue-grey (becoming bronze when old and semi-moribund), with conspicuous, white pseudocyphellae forming networks on the lobe surfaces. On older thalli, the pseudocyphellae develop into irregular, laminar soralia. Widespread and common on branches and trunks of trees and less often on rocks.
Refs: Smith et al. (2009), 653; Purvis et al. (1992), 425; Dobson (2005), 302-303 (photo); Jahns (1983), 198-9 (photo); van Herk & Aptroot (2004), 276-277 (photo); Hansen & Anderson (1995), 46 (photo); Wirth (1995), 2: 646, 663 (photo); Moberg & Holmåson (1984), 94 (photo); Holien & Tønsberg (2008), 57 (photo); Pope (2005), 34 (photo); Brodo et al. (2001), 483 (photo); Hinds & Hinds (2007), 340 (photo).
On Sycamore (Acer pseudoplatanus), Kindrogan, Perthshire, March 2008
On Grey Sallow (Salix cinerea ssp. cinerea) in carr, Wicken Fen, Cambridgeshire, April 2006
Kindrogan, Perthshire, April 2002 (material with apothecia)
Kindrogan, Perthshire, April 2003 (mature material showing laminar soralia developed along the lines of the old pseudocyphellae)
Kindrogan, Perthshire, April 2002 (Trebouxia photobiont)
Link to account of the Trebouxia photobiont
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© A.J. Silverside
Uploaded April 2008, last modified June 2010 (first hosted at www-biol.paisley.ac.uk, January 2003)
