Buellia aethalea

Species of fungus

Buellia aethalea is a species of lichen that belongs to the family Caliciaceae. It is commonly known as darkened button lichen, and Buellie noircie in French. The lichen's familiar nickname is inspired by the appearance of its surface, adorned with small black spots reminiscent of buttons.

This keyword could refer to multiple things. Here are some suggestions: