A crustose lichen with a bluish green to pale or bluish grey thallus that is unevenly granular. Bluish green to grey-green soredia may become confluent, covering the surface of the thallus. When present, apothecia have green-black discs.
Thallus: C+ red, K-, UV+ white
In Scotland, Trapeliopsis flexuosa is widespread on tree stumps and fences. BLS distribution map
Trapeliopsis flexuosa is distinguished from Trapeliopsis granulosa and Trapeliopsis pseudograulosa on basis of the bluish green to dark blue-green soredia, and the thallus that consists of blue-grey to green-grey, flattened granules.
scottishlichens.co.uk 