Wetmore, Lich. Exs. Min. [St. Paul (Minnesota)]
Clifford M. Wetmore [1-225]
IndExs #840155422

Arizona State University Lichen Herbarium
Catalog #: 563832
C.M. Wetmore #70283 13 June 1992
Usnea cavernosa Tuck.
USA, Minnesota, Cook, Superior National Forest, S of Trap Lake near Swamper Creek on Gunflint Trail, 29 km N of Grand Marais

University of Wisconsin - Madison
Catalog #: WIS-L-0085640
C.M. Wetmore #70283 13 June 1992
Usnea cavernosa Tuck.
United States, Minnesota, Cook, Superior National Forest, S of Trap Lake near Swamper Creek on Gunflint Trail, 29 km N of Grand Marais

Uppsala University Exsiccati
Catalog #: L-159776
Clifford M. Wetmore #70283 13 June 1992
Usnea cavernosa Tuck.
United States, Minnesota, Superior National Forest, S of Trap Lake near Swamper Creek on Gunflint Trail (18 mi [29 km] N of Grand Marais)

University of Colorado, Museum of Natural History Herbarium Lichen Collection
Catalog #: COLO-L-0043474
Clifford M. Wetmore #70283 13 June 1992
Usnea cavernosa Tuck.
United States, Minnesota, Cook, Superior National Forest, S of Trap Lake near Swamper Creek on Gunflint Trail, 29 km N of Grand Marais