This crustose lichen has a white to pale grey thallus with neat, convex, marginal lobes. It can become covered in soredia a shade darker than the thallus. It is a familiar rosette-forming species in sheltered habitats exposed to nutrient-rich dust. Older specimens often lose their centres, especially on steep, vertical walls and on churchyard headstones. Black discs occur, but are usually uncommon. Frequent on nutrient-rich trees, old buildings and monuments.
NBN Atlas mapping: Species account : NBN Atlas UK Species Observations database
iNaturalist: Species account : iNaturalist World Species Observations database
Original text submitted by Vince J. Giavarini
Vince J. Giavarini, (2016). Diploicia canescens (Dicks.) A.Massal.. [In] LichenIreland. http://www.habitas.org.uk/lichenireland/species.asp?item=18472 Accessed on 2024-10-09. |