Pohlia rothii (Correns) Broth.

Alaska: Meade River Post Office (Coal Mine), approx. 70 miles S of Barrow.
70.483°, -157.417°
In shaded place, steep side of ditch-like crack between high-center polygons.

W. C. Steere s.n., 02 Jul 1963
NY, Barcode: 00118339