W. A. Tranzschel and J. Serebrianikow
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Wisconsin State Herbarium, Fungi
Catalog #: WIS-F-0071681
s.n.
Leptothyrium betulae Fuckel
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USDA United States National Fungus Collections
Catalog #: BPI 1036554
s.n.
Leptothyrium betulae Fuckel
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USDA United States National Fungus Collections
Catalog #: BPI 389984
Serebrianikow s.n. 00 May 1909
Leptothyrium betulae Fuckel
USSR, Jaroslavl Birch Forest near
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