Thomson: Lich. Wiscon. Exs.
John Walter Thomson, Jr. [1 - 96 [? 108 Uppsala]]

United States National Herbarium - Smithsonian
Catalog #:
http://n2t.net/ark:/65665/342b87662-d869-4486-a556-a96b10ce7fd8
J. W. Thomson #27 20 June 1946
Peltigera canina (L.) Willd.
United States, Wisconsin, Marathon, Mosinee Hills, Rothchild.

United States National Herbarium - Smithsonian
Catalog #:
http://n2t.net/ark:/65665/36c4f662c-d774-4e0a-9f56-145ecc63e2e0
J. W. Thomson #27 20 June 1946
Peltigera didactyla (With.) J. R. Laundon
United States, Wisconsin, Marathon, Mosinee Hills, Rothchild.

University of Michigan Herbarium
Catalog #: 118855
J. W. Thomson #s. n. 20 June 1946
Peltigera spuria f. sorediata (Schaer.) Grummann
United States, Wisconsin, Marathon, bank along road, Mosinee Hills, Rothchild

Arizona State University Lichen Herbarium
Catalog #: 527817
J.W. Thomson s.n. 20 June 1946
Peltigera didactyla (With.) J. R. Laundon
USA, Wisconsin, Marathon, Mosinee Hills, Rothchild

University of Wisconsin - Madison
Catalog #: WIS-L-0003089
John W. Thomson #27 20 June 1946
Peltigera didactyla (With.) J. R. Laundon
United States, Wisconsin, Marathon, Mosinee Hills.

University of Colorado, Museum of Natural History Herbarium Lichen Collection
Catalog #: COLO-L-0031059
John W. Thomson #S 4502 20 June 1946
Peltigera canina (L.) Willd.
United States, Wisconsin, Marathon, Mosinee Hills, Rothchild

Uppsala University Exsiccati
Catalog #: L-525559
John W. Thomson Jr s.n. 20 June 1946
Peltigera canina (L.) Willd.
United States, Wisconsin, Marathon, Mosinee Hills, Rothchild, Marathon Co

Duke University Herbarium Lichen Collection
Catalog #: 185227
bf299be0-fa34-11e2-a92b-005056000560
Thomson, Jr., John, Walter #s.n. 20 June 1946
Peltigera didactyla (With.) J. R. Laundon
United States, Wisconsin, Marathon Co., Rothschild, Mosinee Hills