U.S.A., Montana, Glacier, Around the perimeter of Lost Lake, approximately 10 miles SW of St. Mary, Montana on the Going-to -the-Sun Road, Glacier National Park.
48.681751 -113.574799 Not Georef
48.6817513° N, -113.5747986° W
1463 meters
4800 ft.
On Populus.
On cottonwood bark. Common. With Leptogium saturninum. Dup. ver: John W. Thomson, 3/90 as Buellia erubescens. Det: B. McCune, 2010 as L. euphorea. Thallus K+, pale yellow, C-, KC-. Substrate: Corticolous.