Teloschistaceae Flavoplaca marina (Caloplaca marina) Growth type crustose Chemical results: K+ crimson On hard coastal rocks, pebbles and cement, often with C. thallincola Variable. Thallus continuous and areolate or fragmented and granular, orange or yellow-orange, the small deeper-orange apothecia with thin, paler margins. Well-developed specimens sometimes form areoles with small lobes. Similar: Caloplaca maritima. Yellower thallus usually with pale prothallus

Caloplaca marina
Dancing Ledge, Dorset, February 2013 and Warren Shore, Hants, November 2013