Appearance
Thallus: crustose, warted-areolate or minutely squamulose, mostly sorediate.Areoles: regular in outline or irregularly incised, usually strongly convex surface: grayish green to olive-green
Apothecia: relatively rare
Habitat
Widespread and common - especially on old hardwood.References:
Some text fragments are auto parsed from Wikipedia.
http://lichenportal.org/portal/taxa/index.php?taxon=55645