J.T.C. Vestergren [1-1800, plus extras]
University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Tycho Vestergren s.n. 17 August 1897
Erysiphe tortilis (Wallr.) Link
Sweden, Suecia: Gotland, Kallungemyr
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Wisconsin State Herbarium, Fungi
Tycho Vestergren #s.n. 18 August 1897
Erysiphe tortilis (Wallr.) Link
Sweden, Gotland, Kallungemyr
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USDA United States National Fungus Collections
Vestergren Tycho s.n. 17 August 1897
Erysiphe tortilis (Wallr.) Link
Sweden, Gotland, Kaellungemyr, Road to Bara Spaenger
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