You searched for: Place Glacier National Park, Grinnell argillite ledges along Ptarmigan Trail to Mt. Henkel Remove constraint Place: Glacier National Park, Grinnell argillite ledges along Ptarmigan Trail to Mt. Henkel Place Montana Remove constraint Place: Montana Place no data Remove constraint Place: no data Topic Fungi Remove constraint Topic: Fungi Topic Lichens Remove constraint Topic: Lichens Topic Physcia Remove constraint Topic: Physcia