Trapeliopsis flexuosa (Fr.) Coppins & P. James

A widely distributed, abundant epixylic and epiphytic, acidophilic lichen, characterized by blue-green soralia with C+ red reaction. It is typically found on well-lit, slowly decomposing standing or lying wood in forest clearings, often on worked timber (such as fences, railings, etc.), but also on acidic bark of coniferous (e. g., pine) and deciduous trees (e. g., birch, oak). It might be confused with T. granulosa, which is primarily terricolous but sometimes also occurs on wood or bark.

Ascomycota → Lecanoromycetes → Trapeliales → Trapeliaceae → Trapeliopsis