Candelariaceae Candelariella vitellina Chemical reactions: K- (Caloplaca species K+ red) Siliceous and calcareous rocks, concrete posts and bird-perch sites, wood, tarmac and rusty iron. Best developed on dusty, nutrient-rich substrata. Host to Intralichen christiansenii and Carbonea vitellinaria Variable. Thallus yellow to orange-brownish, thin or of flattened granules forming thick crusts. Dull yellow apothecia darken with age. Soredia and isidia absent. Asci 12-32 spored. Simple spores with oil droplets (can appear 1-septate) 9-15 x 3.5-7 µm. Microscope photographs below. Similar: C. coralliza. Rarely fertile, thicker areolate thallus. C. aurella. Mainly urban, nurient-rich, calcareous substrata. Asci 8-spored

Microscope photographs




Candelariella vitellina
On ironstone and fibreglass. Brands Bay, Dorset. January 2013 and May 2015.