Caloplaca arcis Lecanorales
Flavoplaca arcis (Caloplaca arcis)

Growth type crustose
Chemical results: K+ crimson

Can be common on cement and limestone, often found in churchyards. Previously known as 'Caloplaca A' by churchyard recording groups.
BLS conservation evaluation: LC NS

Thallus appearing as minute yellow rosettes, lobate at margins. Margins of areoles with large blastidia, soredia absent.

Similar: Caloplaca citrina and Caloplaca flavocitrina are sorediate but without marginal lobes

Caloplaca arcis

Caloplaca arcis

Caloplaca arcis
Caloplaca arcis
Pamphill Green and Wareham, Dorset. December 2015, 2016

All images used are copyright. Please contact me if you find errors.