A.B. Seymour and F.S. Earle [1-550, plus extras]
USDA United States National Fungus Collections
s.n.
Peronospora arthuri Farl.
United States
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USDA United States National Fungus Collections
s.n.
Peronospora arthuri Farl.
United States
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Cornell University Plant Pathology Herbarium
Catalog #: S.E.,Econ.F.0282
B. D. Halsted s.n. 09 July 1892
Peronospora arthuri Farl.
United States, New York, Onondaga, Syracuse;
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