C.G. Shaw and W.B. Cooke [1-98, plus extras]

USDA United States National Fungus Collections
Catalog #: BPI 1023905
s.n.
Erysiphe polygoni DC.
United States, Washington

University of California Berkeley, University Herbarium
Catalog #: UC976054
W. N. Suksdorf #187 20 June 1885
Erysiphe pisi DC.
USA, Washington, Klickitat, Bingen