Corticolous; on freestanding nutrient-enriched deciduous trees, usually on twigs; rarely saxicolous.

Lobes up to 2 mm wide, adpressed; isidia covering the center, solid, small, cylindrical to coralloid; lower surface pale brown; apothecia not seen.
Reagent tests: negative.
Similar is P. exasperatula (no spot reactions too), but isidia clavate; P. exasperata has warty isidia with concave tips; P glabratula is also very similar, but lower side black and medulla C+ red;

Central Europe; Germany: Hesse.