lastdragon.org
Alan Silverside's Lichen Pages
Xanthoria calcicola Oxner
Foliose, yellow to orange, resembling the common Xanthoria parietina but with thallus surface densely covered with coralloid isidia; apothecia generally sparse or absent. Widespread but predominantly south-eastern, on calcium-rich stonework and mortar.
Refs: Smith et al. (2009), 969; Purvis et al. (1992), 647; Dobson (2005), 461 (photo); van Herk & Aptroot (2004), 394-5 (photo); Thor & Arvidsson (1999), 338 (photo), 519; Wirth (1995), 2: 972 (photo), 973.
The name 'Xanthoria aureola' has been and continues to be widely used for this species, though the name is now considered the 'correct' name for X. ectaneoides. It will continue to be a source of confusion and is best rejected [ICBN art. 57.1].
Photographs: Wicken Fen, Cambridgeshire, April 2007
Back to Lichens HOME PAGE
Back to Lichens INDEX OF SPECIESConditions of Use and e-mail contact
© A.J. Silverside
Uploaded August 2008, last modified June 2010
