Irish lichens
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Order: Lecanorales Family: Lecideaceae
Species: Lecidea grisella Photos: On coastal rocks, Allihies, Co. Cork, SW Ireland. Whitish-grey to brownish-grey thallus, initially cracked and then areolate with a thinner cracked margin and a thin black prothallus. Apothecia abundant, flat becoming slightly convex, blackish but often thinly white-priuinose. Usually on +/- smooth and slightly nutrient enriched siliceous rocks, walls and bricks but also recorded from roof tiles and on wood. Chemical results K-, C+ red, KC+/- red, Pd-. Similar: Lecidea fuscoatra |
Lecidea grisella. June 2009