F.K.A.E.J. de Thümen [1-2300, plus extras]

University of Illinois Herbarium
Catalog #: ILL00077748
s.n.
Ramularia didyma

USDA United States National Fungus Collections
Catalog #: BPI 1036192
s.n.
Ramularia didyma

USDA United States National Fungus Collections
Catalog #: BPI 415599
Voss W. s.n. 00 July 1881
Didymaria ungeri Corda
Yugoslavia, Carniola, Ljubljana (Laibach)

Purdue University, Kriebel Herbarium
Catalog #: PUL00034182
W Voss s.n. 00 July 1881
Ramularia didyma
Carniolia, Laibach;

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00077193
W. Voss s.n. 00 July 1881
Ramularia didyma
Slovenia, Carniolia: Laibach