Hyaloperonospora drabae (Gäumann) Choi, Shin & Voglmayer, 2011
leaves with pales spots. Underside with a dense white down, consisting of erect conidiophores that apically several times are branching, each branch ending in a conidium.
Draba muralis, nemorosa.
Peronospora drabae Gäumann, 1918.
On Draba nemoralis both H. norvegica and H. drabae may occur, wich is unusual for the generally narrowly monophagous Peronosporaceae. They usually differ clearly: drabae forms a dens felty down, in norvegica the conidiophores are diffusely scattered.
Brandenburger (1985a), Choi, Shin & Voglmayr (2011a), Hafellner (1980a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Kruse (2019a).