Melanohalea exasperatula, an epiphyte lichen

Melanohalea exasperatula, an epiphyte lichen from Finland growing on the trunk of European ash tree

European ashFinlandJanuaryMelanohaleaMelanohalea exasperatulaParmeliaPhysciaashasperaepiphyteepiphyte lichenexasperatulagreenlichenlichenstreetree trunktrunkwinterjäkäläNystyruskokarvekarvejäkälä