F.K.A.E.J. de Thümen [1-750, plus extras]
University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
s.n.
Polyporus betulinus (Bull.) Fr.
Germany, Sachsen: bei Leipzig
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USDA United States National Fungus Collections
s.n.
Polyporus betulinus (Bull.) Fr.
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University of Illinois Herbarium
Dr. Winter s.n.
Polyporus betulinus (Bull.) Fr.
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