F. Theissen [1-300]
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0077776
s.n.
Polystictus rigescens (Cooke) Cooke
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USDA United States National Fungus Collections
Catalog #: BPI 218939
Rick s.n.
Polyporus rigescens (Cooke) Sacc.
Brazil, Sao Leopoldo, Rio Grande do Sul
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