J.T.C. Vestergren [1-1800, plus extras]
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0078924
E. W. D. Holway #s.n. 14 August 1906
Puccinia petasitis Vestergr.
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USDA United States National Fungus Collections
Catalog #: BPI 058075
Holway E. W. D. s.n. 14 August 1906
Puccinia petasitis Vestergr.
Canada, British Columbia, Glacier
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USDA United States National Fungus Collections
Catalog #: BPI 1039603
Holway E. W. D. s.n. 14 August 1906
Puccinia petasitis Vestergr.
Canada, British Columbia, Glacier
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University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00041445
Vestergren #s.n. 14 August 1906
Puccinia petasitis Vesterg.
Canada, British Columbia
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