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.

hostplants

Lamiaceae, monophagous

Stachys annua, “betonica”, officinalis, palustris, sylvatica.

references

Brandenburger (1985a), 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).

mod 2.ix.2018