Petrak, Crypt. Exs.
F. Petrak [3201- 4700]

USDA United States National Fungus Collections
Catalog #: BPI 1042340
s.n.
Erysiphe convolvuli DC.
Germany

USDA United States National Fungus Collections
Catalog #: BPI 1042396
s.n.
Erysiphe convolvuli DC.
Germany

Field Museum of Natural History
Catalog #: C0285538F
993a4ba9-5425-40fa-afde-f36e4e0018cc
J. Brunnthaler #s.n.
Erysiphe convolvuli DC. DC.
Austria, Niederösterreich, Soos, Baden