F.K.A.E.J. de Thümen [1-750, plus extras]
University of Illinois Fungarium - Fungi
s.n.
Leptothyrium tremulae Kabát & Bubák
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University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Dr. Morthier s.n. 00 September 1878
Leptothyrium tremulae Kabát & Bubák
Switzerland, bei Neuchatel
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USDA United States National Fungus Collections
Morthier #s.n. 00 September 1878
Leptothyrium tremulae Lib.
Switzerland, Neuchatel
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