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Stereocaulon condensatum Hoffm.


Thallus consisting of aggregations of whitish- to bluish-grey, coralloid-lobed 'phyllocladia', plus occasional to frequent, erect or suberect, stalk-like, pale pinkish-orange 'pseudopodetia', which are typically about 1cm in height and also bear small phyllocladia; cephalodia wrinkled, brown to black, dispersed amongst the basal phyllocladia; soredia absent; thallus testing faintly yellow with Pd (para-phenylenediamine); apothecia frequent, brown, on tips of pseudopodetia and larger basal phyllocladia. On sandy and gravelly soils in exposed situations, mostly in the north and west, often montane or in metal-rich sites or on acid dune-systems.

Refs: Smith et al. (2009), 860; Purvis et al. (1992), 579; Dobson (2011), 420 (photos); van Herk & Aptroot (2004, 2013), 354-5 (photo); Aptroot et al. (2011), 153 (photos); Krog et al. (1994), 278 (photo); Holien & Tønsberg (2008), 97 (photo); Stenroos et al. (2011) 429 (photo); Hansen & Anderson (1995), 62 (photo); Hinds & Hinds (2007), 454 (photo).

Stereocaulon condensatum
Stereocaulon condensatum
Stereocaulon condensatum
Stereocaulon condensatum
On exposed, sandy gravel in acid dune system, Findhorn, Morayshire, April 2009. Photo 3 shows a closer view of the black cephalodia; photo 4 shows apothecia.
 
Stereocaulon condensatum
Small material on exposed, sandy gravel in acid dune system, Findhorn, Morayshire, August 2010 (BLS meeting).
 
Stereocaulon condensatum
Stereocaulon condensatum
On peaty gravel in degraded montane heath, Glenshee, Aberdeenshire, August 2008.


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Uploaded August 2012, updated January 2014