Peronospora sisymbrii-orientalis Gäumann, 1918

on Sisymbrium

gall

leaves pale, may be disfigured. Underside with a greyish white down, consisting of 0.4 mm high erect conidiophores that apically several times are dichotomously branching, each branch ending in a conidium.

hostplants

Brassicaceae, narrowly monophagous

Sisymbrium orientale.

references

Brandenburger (1985a), Buhr (1965a), Klenke & Scholler (2015a), Săvulescu (1948a).

mod 24.viii.2017