Trapeliopsis flexuosa forme des épaves de bateaux en bois
This form is characterized by its occurrence on the wooden planks of ship wrecks in boat cemeteries located in the mudflats at the bottom of the Rias and Abers. On this always humid environment, this form is noticed by the granular aspect of its green-bluish, green, greenish-gray thallus, being covered with green soredia which end up merging completely. Apothecia very rare, sessile, flat black disc, sharp, wavy margin, black. N.B. Almost always in the company of Placynthiella icmalea and Placynthiella uliginosa.