Locality:
United States, California, San Clemente Island, Eel Point, west shore of the island
Habitat:
on flat rocks at tops of outcrops just above the sea.
Occurrence Remarks:
Lichenes exsiccati distributed by the University of Colorado Museum, William A. Weber, Curator [Weber, Lich. Exs. [Boulder (Colorado)]], 1-?700, William Alfred Weber, exs #: 189; Pruinose and epruinose forms grow together, the thalli of the epruinose form usually overlapping the pruinose form, both, however, evidently identical anatomically and chemically; Lichenes exsiccati distributed by the University of Colorado Museum, William A. Weber, Curator [Weber, Lich. Exs. [Boulder (Colorado)]], 1-?700, William Alfred Weber, exs #: 189