Constantinescu & Negrean, Herb. Mycol. Roman.O. Constantinescu ; G. Negrean [1851-3000]
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Cornell University Plant Pathology Herbarium
Catalog #: Herb.Myc.Rom.2078
s.n.
Erysiphe R. Hedw. ex DC.
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USDA United States National Fungus Collections
Catalog #: BPI 1019460
s.n.
Erysiphe polygoni DC.
Romania
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Purdue University, Kriebel Herbarium
Catalog #: PUL00028591
G Negrean s.n. 01 September 1973
Erysiphe polygoni DC.
Romania, Maramures, Baia Mare; Tauti Magheraus
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