USDA United States National Fungus Collections
Greschik, V. s.n. 00 June 1923
Peronospora calotheca de Bary
Europe, Ost-Beskids
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Charles Gardner Shaw Mycological Herbarium, Washington State University
V. Grenholz s.n. 00 June 1923
Peronospora calotheca de Bary
, Osc-Beskiden: Leutschon
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