Almost unmistakable microlichen with a vivid ochraceous to orange pruina and often conspicuously convex apothecia. It has more than a hundred tiny globose ascospores in an ascus. When young, the species may form only pycnidia with a conspicuous drop of white slime; the conidia are spherical. It grows on subneutral bark of deciduous trees in forests, parks or on solitary trees in a cultural landscape. It is common on the bark of elder, Norway maple or elm tree. It is a common but easily overlooked species.
taxonomic classification:Ascomycota → Lichinomycetes → Thelocarpales → Thelocarpaceae → Piccolia
All records: 110, confirmed 107. One click on a selected square displays particular record(s), including their source(s).