G.L. Rabenhorst [1-2600]
University of Wisconsin-Madison Herbarium
P. Magnus #s.n. 02 June 1886
Ascomyces betulae Magnus
Germany, Tiergarten, Berlin
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University of Wisconsin-Madison Herbarium
P. Magnus #s.n. 12 June 1888
Exoascus betulae Fuckel
Germany, Theirgarten, Betula
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