Peronospora valerianae Trail, 1889

on Valeriana

gall

leaves with pale spots. Underside with a greyish-violet down, consisting of erect conidiophores that apically several times are dichotomously branching, each terminal branch ending upon an ovoid conidium.

hostplants

Caprifoliaceae, monophagous

Valeriana dioica, officinalis, tripteris.

references

Brandenburger (1985a), Doppelbaur & Doppelbaur (1974a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Săvulescu (1948a).