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Images of British Lichens



Pycnothelia papillaria Dufour


Primary thallus a granular crust, supporting short, vertical, cylindrical, simple or branched podetia topped by brown pycnidia; apothecia red-brown, clusted on the podetial tips, but rare. On peat, locally throughout Britain where suitable habitat exists but inevitably absent from most of lowland England and southern Scotland. Easily taken to be a Cladonia, in which genus it was formerly included.

Refs: Smith et al. (2009), 773; Purvis et al. (1992), 515; Dobson (2005), 376 (photo); Dobson (2011), 379 (photo); Jahns (1983), 220-1 (photo); van Herk & Aptroot (2004, 2013), 328-9 (photo); Aptroot et al. (2011), 152 (photo); Wirth (1995), 2: 790 (photo); Wirth, Hauck & Schulz (2013), 2: 963 (photo); Moberg & Holmåson (1984), 147 (photo); Holien & Tønsberg (2008), 95 (photo, shows apothecia); Stenroos et al. (2011), 389 (photo); Nordic Lichen Flora (2013) 5: 90, 111 (photo); Hinds & Hinds (2007), 432-3 (photo); Brodo et al. (2001), 610 (photo).

 
Pycnothelia papillaria
On steep, peaty bank in moorland, Glen Lyon, Perthshire, August 2009


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Uploaded November 2009, last updated January 2014