Thümen, Fungi Austr. Exs.F.K.A.E.J. de Thümen [1-1200]
USDA United States National Fungus Collections
de Thumen s.n.
Peronospora violae de Bary
Czechoslovakia, Aussig, Bohemia
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University of Illinois Herbarium
de Thümen s.n.
Peronospora effusa v. Violae DeBy.
Czech Republic, Bohemia, Ústí nad Labem
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