Peronospora rhaetica Gäumann, 1923

on Sisymbrium

gall

leaves pale, may be disfigured. Underside with a greyish white down, consisting of 0.6 mm high erect conidiophores that apically several times are dichotomously branching, each branch ending in a conidium.

hostplants

Brassicaceae, narrowly monophagous

Sisymbrium strictissimum.

references

Blumer (1946a), Brandenburger (1985a), Buhr (1965a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a).

mod 31.viii.2018