Thümen, Fungi Austr. Exs.F.K.A.E.J. de Thümen [1-1200]
University of Illinois Herbarium
de Thümen s.n.
Erysiphe horridula f. cerinthes minoris Lev
Austria, Hollenburg
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USDA United States National Fungus Collections
Thuemen s.n.
Erysiphe horridula (Wallr.) Rabenh.
Austria, Hollenburg
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