Caloplaca cerina

caloplaca cerina 1 graphic
Caloplaca cerina 1
On Populus tremuloides bark. From the North Shore of Lake Superior, Ontario.

Caloplaca cerina 2
On moss. From Manning Provincial Park, British Columbia.

Caloplaca cerina "var. chloroleuca"
(tentative ID only, from photo on website)
On mossy rock. From Glacier National Park, Montana.

Caloplaca cerina cfr.
On Quercus bark. From northern Coast Range, California.