F.K.A.E.J. de Thümen [1-750, plus extras]
University of Illinois Herbarium
von Thumen s.n. 00 July 1875
Polyporus corticola Fr.
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University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
von Thumen s.n. 00 July 1875
Poria corticola (Fries) Cooke
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