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Images of British Lichens

Lecanora sulphurea (Hoffm.) Ach.

Thallus a thick, cracked-areolate, greenish- or grey-yellow to yellow-grey crust, soredia absent; apothecia initially immersed, irregular, discs variable in colour, yellowish to black, grey-pruinose. Widespread on siliceous rocks and stonework.

Refs: Smith et al. (2009), 500; Purvis et al. (1992), 317; Dobson (2005), 232 (photo); Dobson (2011), 234-5 (photo, atypical); Whelan (2011), 106 (photo); van Herk & Aptroot (2004, 2013), 222-3 (photo); Wirth (1995), 1: 454, 491 (photo); Wirth et al. (2004), 212 (photo, greenish variant); Wirth, Hauck & Schulz (2013), 1: 577, 578 (photo, poor colour); Valcárcel et al. (2003), 220-1 (photo); Puntillo (1996), plate 22 (photo).

Digital photo and printing technology commonly renders this species more grey than it is in real life.

Lecanora sulphurea
Lecanora sulphurea
Lecanora sulphurea
Lecanora sulphurea with Ochrolechia parella on old bridge
On stonework of old bridge wall (co-dominant with Ochrolechia parella), Cuthill, Invernessshire, July 2008
(the photographs have under-represented the yellow colour in this species)

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© A.J. Silverside
Uploaded November 2008, last updated December 2013