Peronospora stachydis Sydow, 1923
on Stachys
gall
leaves with numerous small violet spots between the veins. Underside with a greyish brown to violet down of erect conidiophores that apically several times are dichotomously branching, each branch ending upon an ovoid conidium.
host plants
Lamiaceae, monophagous
Stachys annua, “betonica”, officinalis, palustris, sylvatica.
references
Brandenburger (1985a: 543), Chater, Woods, Stringer, ao (2020a), Dietrich (2013a), Doppelbaur, Huber & Poelt (1965a), Gustavsson (1959a), Jage, Kruse, Kummer ao (2013a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Kruse (2014a), Müller & Kokeš (2008a), Săvulescu (1948a).