Parmotrema reticulatum - Ruffle Lichen

Pale green lichen with black cilia around its edges and small, (very) fine cracks. Powdery, pale brown to orange soredia are present. Lower surface is dark gray to black. K+ on upper surface (yellow-green).

Habitat:
On a fallen hardwood branch in a dense mixed hardwood/coniferous forest in Northwest Georgia (Gordon County), US.