Images of British Lichens
Squamarina cartilaginea (With.) P.James
Thallus consisting of overlapping, lobed squamules, yellowish- or grey- to brownish green, dark beneath, often pruinose at least at the margins; apothecia common, orange-brown, with pale, thalline margins that often become turned under at maturity. Mostly on limestone, predominantly coastal, or inland on limestone scars in the Pennines, more rarely on calcareous soils or on serpentine rock.
Refs: Smith et al. (2009), 851; Purvis et al. (1992), 572; Dobson (2005), 411 (photo); Dobson (2011), 416 (photo); Jahns (1983), 204-5 (photo, as S. 'cartilaginae'); Wirth (1995), 2: 868 (photo); Wirth et al. (2004), 166 (photo); Wirth, Hauck & Schulz (2013), 2: 1045-7 (photos); Schumm (2011), 345-349 (photos, photomicrographs); Moberg & Holmåson (1984), 118 (photo); Valcárcel et al. (2003), 352-3 (photo).
|On limestone scar, Giggleswick, Yorkshire, May 2010|
|On limestone scar, Shap, Westmorland, April 2012. Lowest photograph shows colony in moist state.|
|On limestone sea-cliff, Stackpole, Pembrokeshire, May 2009|
|On limestone sea-cliff, Durness, West Sutherland, July 2012.|
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Uploaded October 2012, updated September 2013