F.K.A.E.J. de Thümen [1-750, plus extras]
University of Illinois Fungarium - Fungi
s.n.
Sphaerella pusilla Auersw.
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University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Prof. Passerini s.n.
Mycosphaerella pusilla (Auersw.) Johanson
Italy
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