Thomson, Lich. Arct. [Madison (Wisconsin)]
John Walter Thomson [1 - 115]
IndExs #515968978

University of Tennessee Lichen Herbarium
Catalog #: TENN-L-0001072
J. W. Thomson s.n. 00 August 1958
Cetraria nivalis (L.) Ach.
United States, Alaska, North Slope, Valley of the Okpilak River at Okpilak Lake near Mt. Michelson

University of Michigan Herbarium
Catalog #: 77277
59ba3645-22e7-49e8-8e60-df2828a8b456
J. W. Thomson, Jr. #s. n.
Cetraria nivalis (L.) Ach.
United States, Alaska, no data, Valley of the Okpilak River at Okpilak Lake near Mt. Mlchelson.

University of Colorado, Museum of Natural History Herbarium Lichen Collection
Catalog #: COLO-L-0016882
John W. Thomson #S 25891 02 August 1958
Flavocetraria nivalis (L.) Kärnefelt & Thell
United States, Alaska, North Slope, valley of the Okpilak River at Okpilak Lake near Mt. Michelson

University of Wisconsin - Madison
Catalog #: WIS-L-0109554
John W. Thomson #s.n. 02 August 1958
Nephromopsis nivalis (L.) Divakar, A. Crespo & Lumbsch
United States, Alaska, North Slope, Northern Alaska, valley of the Okpilak River at Okpilak Lake near Mt Michelson

Lichen Herbarium of the Museum of Evolution, Uppsala University
Catalog #: L-160611
John W. Thomson & S. Shushan s.n. 02 August 1958
Flavocetraria nivalis (L.) Kärnefelt & Thell
United States, Alaska, Northern Alaska, valley of the Okpilak River at Okpilak Lake near Mt Michelson