H.G. Winter [2601-3600, plus extras]
USDA United States National Fungus Collections
s.n.
Podosphaera oxyacanthae (DC.) de Bary
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Iowa State University, Ada Hayden Herbarium
C.H. Demetrio #s.n.
Podosphaera clandestina var. clandestina (Wallr.:Fr.) Lev.
USA, Mississippi, Perryville;
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