Constantinescu & Negrean, Herb. Mycol. Roman.
O. Constantinescu ; G. Negrean [1851-3000]

USDA United States National Fungus Collections
Catalog #: BPI 563398
Negrean G. s.n. 07 October 1976
Erysiphe heraclei DC.
Romania, Buzau District, Padurea Frasinu