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A.L. de Jaczewski [1-350]
Wisconsin State Herbarium, Fungi
Catalog #: WIS-F-0077788
s.n.
Poria ferruginea-fusca P. Karst.
USDA United States National Fungus Collections
Catalog #: BPI 976162
s.n.
Polyporus ferruginosus (Schrad.) Fr.
USDA United States National Fungus Collections
Catalog #: BPI 239724
Elenkin s.n. 10 September 1898
Poria ferruginosa (Schrad.) P. Karst.
USSR, Udel'naya, near Leningrad (Petropolis)