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Images of British Lichens

Fulgensia fulgens (Sw.) Elenkin
'Scrambled-egg Lichen'

Thallus squamulose or forming a crust with lobed edges (placodioid), egg yellow, strongly pruinose, with surface at the centre forming flake-like shizidia that break away to expose the white medulla; apothecia orange, with narrow, thalline margins. A rare and declining species of calcareous soils, on dunes and where sand has blown over limestone, on coasts of south-west England and S. Wales; formerly on chalk at a few sites further east and in Breckland but apparently now extinct in these areas.

Refs: Smith et al. (2009), 406; Purvis et al. (1992), 251; Dobson (2005), 176 (photo); Dobson (2011), 182 (photo); Jahns (1983), 248-9 (photo); Wirth et al. (2004), 397 (photo); Wirth et al. (2004), 174 (photo); Wirth, Hauck & Schulz (2013), 1: 484 (photo), 485-6; Moberg & Holmåson (1984), 189 (photo); Thomson (1997), 229-30 (photo).

F. fulgens was part of a remarkable community of rare species that has largely vanished from the East Anglian Breckland, no doubt partly due to major habitat destruction of this unique area, but seemingly also as a result of atmospheric nitrate/ammonia deposition from traffic fumes and agricultural drift, with consequently enhanced competition from pleurocarpous mosses, grasses and other vegetation.

FGBI: (as Gyalolechia fulgens)

Fulgensia fulgens
Fulgensia fulgens
Fulgensia fulgens
Fulgensia fulgens with Psora decipiens
Fulgensia fulgens with Toninia sedifolia
Fulgensia fulgens habitat
In thin, sandy turf over limestone, Stackpole, Pembrokeshire, May 2009. Lower photographs show association with Psora decipiens, with Toninia sedifolia, and the open, sandy Fulgensia habitat. Other species in this community include Placidium squamulosum, Romjularia lurida, Bacidia bagliettoana and Diploschistes muscorum.

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© A.J. Silverside
Uploaded January 2012, last updated January 2016