Peronospora schachtii Fuckel, 1880
underside of especially the lower the leaves with a greyish purple fungal down consisting of vertical conidiophores that apically several times are dichotomously branching, each branch ending upon an elliptic, olivaceous brown conidium. Young leaves of intected plants often are reddened, thickened en disfigured.
Beta vulgaris & subsp. maritima.
Brandenburger (1985a: 118), Buhr (1964a), Cunnington (2008a), Dauphin & Aniotsbehere (1997a), Gustavsson (1991a), Jage, Klenke, Kruse ao (2017a), Kim, Choi & Shin (2010a), Klenke & Scholler (2015a), Müller (2015a), Müller & Kokeš (2008a), Mułenko, Piątek, Wołczańska ao (2010a), Săvulescu (1948a).