Thomson: Lich. Arct.
John Walter Thomson [1 - 115]

University of Michigan Herbarium
Catalog #: 80519
J. W. Thomson #s. n. 18 July 1958
Cladonia gracilis f. amaura
United States, Alaska, On the point of Point Barrow

Uppsala University Exsiccati
Catalog #: L-160593
John W. Thomson s.n. 10 July 1958
Cladonia gracilis (L.) Willd.
United States, Alaska, Northern Alaska, on the point of Point Barrow

University of Colorado, Museum of Natural History Herbarium Lichen Collection
Catalog #: COLO-L-0012565
John W. Thomson #S 25873 18 July 1958
Cladonia gracilis (L.) Willd.
United States, Alaska, North Slope, point of Point Barrow

University of Wisconsin - Madison
Catalog #: WIS-L-0109536
John W. Thomson #s.n. 18 July 1958
Cladonia gracilis (L.) Willd.
United States, Alaska, North Slope, Northern Alaska, on the point of Point Barrow

Duke University Herbarium
Catalog #: 191502
bfd9f372-fa34-11e2-a92b-005056000560
Thomson, Jr., John, Walter; Shushan, Sam; Sharp, A., J. #s.n. 18 July 1958
Cladonia gracilis (L.) Willd.
United States, Alaska, North Slope, On the point of Point Barrow