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Images of British Lichens
Collema cristatum (L.) Weber ex F.H. Wigg.
Lobes smooth, rather narrow, concave, with incised to lobulate margins, isidia typically absent (though an isidiate variant exists); apothecia usually present and often crowded. Widespread on hard limestones and on calcareous dunes.
Refs: Smith et al. (2009), 351; Purvis et al. (1992), 220; Dobson (2005), 152 (photo); Dobson (2011), 158 (photo); Jahns (1983), 182-3 (photo); Whelan (2011), 83 (photos); Nordic Lichen Flora (2007) 3: 19, 173 (photo); Wirth (1995), 1: 352, 355 (photo, wet); Wirth et al. (2004), 157 (photo). |
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| In dry state on limestone rocks, Schiehallion, Perthshire, April 2003 |
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© A.J. Silverside
Uploaded March 2008, last updated May 2012 (first hosted at www-biol.paisley.ac.uk, December 2006)
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