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

Arizona State University Lichen Herbarium
Catalog #: 527855
J.W. Thomson s.n. 09 August 1946
Opegrapha varia Pers.
USA, Wisconsin, Douglas, Brule River valley, T45N R11W Sec. 3

University of Colorado, Museum of Natural History Herbarium Lichen Collection
Catalog #: COLO-L-0028937
John W. Thomson #S 4478 09 August 1946
Alyxoria varia (Pers.) Ertz & Tehler
United States, Wisconsin, Douglas, Brule River valley

University of Wisconsin - Madison
Catalog #: WIS-L-0111601
John W. Thomson #s.n. 09 August 1946
Alyxoria varia (Pers.) Ertz & Tehler
United States, Wisconsin, Douglas, Brule River valley

Uppsala University Exsiccati
Catalog #: L-525576
John W. Thomson Jr s.n. 09 August 1946
Opegrapha varia Pers.
United States, Wisconsin, Douglas, Brule River valley

Duke University Herbarium Lichen Collection
Catalog #: 0299947
Thomson Jr., John W. #s.n. 09 August 1946
Alyxoria varia (Pers.) Ertz & Tehler
United States, Wisconsin, Douglas, Brule River valley