Rhizocarpon geographicum

Rhizocarpon geographicum 1
On rock. From the Rocky Mountain National Park, Colorado.

Rhizocarpon geographicum 2
On rock. From Glacier National Park, Montana.

Rhizocarpon geographicum 3
On rock. From interior Alaska.

Rhizocarpon geographicum 4
On rock. From the Rocky Mountains, Colorado.

Rhizocarpon geographicum 5
On rock. From Acadia National Park, Maine.

Rhizocarpon geographicum 6
On granitic rock. From the Salmon River Canyon, Idaho.

Rhizocarpon geographicum 7
On granitic rock. From the Salmon River Canyon, Idaho.

Rhizocarpon geographicum 8
On rock. From the Malheur National Forest, Oregon.