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Lecanoraceae
Myriolecis antiqua (Lecanora antiqua) (L. conferta) Growth type crustose Chemistry: K-, C+ yellow-orange, KC+ yellow-orange, P-, UV+ bright pink Most frequent on limestone and mortared church walls but also found on the vertical surfaces of basic rocks. Can be variable. Thallus absent, whitish or creamy-grey, thick and areolate, warted or smooth. Crowded apothecia with very pruinose cream-brown to brown discs and thick, sometimes crenulate margins. Similar: Lecanora crenulata has pruinose apothecia but K-, C-. L. pruinosa. Thallus C+ orange, UV +/- orange. Thalline margin UV+ orange |
Lecanora antiqua
Wool, Dorset. February 2013