Peronospora arabidis-hirsutae Gäumann, 1918

on Arabis

gall

the plant is disfigured, leaves are small, pale, their margins bent downwards. Underside of the leaves with a greyish-white bloom of fungus, consisting of vertical, apically strongly branched conidiophores.

hostplants

Brassicaceae, narrowly monophahous

Arabis auriculata, ? ciliata, hirsuta, planisiliqua subsp. nemorensis, sagittata, ? soyeri.

references

Brandenburger (1985a), Buhr (1964b), Doppelbaur, Huber & Poelt (1965a), Hafellner (1980a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Săvulescu (1948a).

mod 31.viii.2018