Gyalolechia flavovirescens 1
On rock. From southern Arizona.

Gyalolechia flavovirescens 2
On rock. From Ozark National Forest, Arkansas.

Gyalolechia flavovirescens 3
On rock. From Ozark National Forest, Arkansas.

Gyalolechia flavovirescens 4
On rock. From the North Shore of Lake Superior, Ontario.