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

University of Michigan Herbarium
Catalog #: 122175
J. W. Thomson #s. n. 12 September 1953
Physciopsis syncolla (Tuck. ex Nyl.) Poelt
United States, Wisconsin, Iowa, Sawles Mill, Arena

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00029868
J.W. Thomson #s.n. 12 September 1953
Hyperphyscia syncolla (Tuck. ex Nyl.) Kalb
USA, Iowa, Iowa, Arena; Sawles Mill

Uppsala University Exsiccati
Catalog #: L-525732
J.W. Thomson, E. Dahl, W.L. Culberson s.n. 12 September 1953
Physcia syncolla Tuck. ex Nyl.
United States, Wisconsin, Iowa, Sawles Mill, Arena, Iowa Co

University of Wisconsin - Madison
Catalog #: WIS-L-0111618
John W. Thomson #s.n. 12 September 1953
Physcia syncolla Tuck. ex Nyl.
United States, Wisconsin, Iowa, Sawles Mill, Arena