P. Sydow and W. Zopf [1-4900]

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000280177
P. Sydow #589 00 June 1885
Peronospora parasitica (Pers.) Fr.

USDA United States National Fungus Collections
Catalog #: BPI 1054294
P. Sydow #s. n. 00 July 1884
Helotium urticae (Pers.) P. Karst.
Germany, Berlin