Hyaloperonospora erucastri (Gäumann) Choi & Thines, 2017
upper side of the leaf with indistinct spots. Underside with a greyish white down of erect conidiophores that apically several times are branching, each branch ending upon an egg-shaped conidium.
Erucastrum gallicum, nasturtiifolium.
The reference by Klenke & Scholler to Hirschfeldia incana probably concerns a different, possibly as yet undescribed, Hyaloperonospora.
Peronospora erucastri Gäumann, 1918.
Brandenburger (1985a), Choi, Kruse & Thines (2017a), Doppelbaur & Doppelbaur (1974a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Negrean (1996a).