Thümen, Fungi Austr. Exs.
F.K.A.E.J. de Thümen [1-1200]

USDA United States National Fungus Collections
Catalog #: BPI 1033426
s.n.
Oidium leucoconium Desm.

USDA United States National Fungus Collections
Catalog #: BPI 415598
Boller A. s.n.
Didymaria ungeri Corda
Austria, Lower Austria, Krems

USDA United States National Fungus Collections
Catalog #: BPI 409633
Eichler s.n.
Oidium leucoconium f. centifoliae
Czechoslovakia, formerly Austria Bohemia, Teplice Gardens