Peronospora agrimoniae Sydow, 1923

on Agrimonia

gall

upperside of the leaves with small, initially yellow, ultimately red to brown, spots. Their underside with a greyish-white down, consisting of erect conidiophores that apically several times are dichotomously branching, each branch ending in an egg-shaped conidium.

hostplants

Rosaceae, monophagous

Agrimonia eupatoria, procera.

references

Brandenburger (1985a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Kruse (2014a), Sàˆvulescu (1948a).

mod 31.viii.2018