Westendorp & Wallays, Herb. Crypt. Belg.
G.D. Westendorp ; A.C.F. Wallays [351-1400]

USDA United States National Fungus Collections
Catalog #: BPI 1044894
s.n.
Erysiphe communis (Wallr.) Schltdl.
Belgium

USDA United States National Fungus Collections
Catalog #: BPI 1044895
s.n.
Erysiphe communis (Wallr.) Schltdl.
Belgium