Images of British Lichens
Lecanora swartzii (Ach.) Ach.
Thallus a thick, cracked-areolate, grey-white to brown-grey crust, yellow with KOH and orange-red with sodium hypochlorite, soredia absent; apothecia clustered, constricted beneath and standing away from the thallus at maturity, discs yellow-brown but thickly grey-pruinose. Rare, on siliceous rock-faces in the Scottish Highlands.
Refs: Smith et al. (2009), 500; Purvis et al. (1992), 317; Wirth (1995), 1: 457, 487 (photo); Wirth, Hauck & Schulz (2013), 1: 560, 582, 602 (photo); Hansen & Andersen (1995), 97 (different subspecies? – as L. subradiosa).
|On an apparently iron-rich, montane rockface, Braemar, Aberdeenshire, March 2008|
Lichens HOME PAGE | Index of Species | Conditions of Use and e-mail contact | References | Site Home Page
© A.J. Silverside
Uploaded November 2008, last updated September 2013