Peronospora argemones Gäumann, 1923

on Papaver

gall

underside of the leaves with a pale greyish purple down of erect conidiophores that apically several times are dichotomously branching, each branch ending upon a conidium. Embedded in the host tissue lie brown, thick-walled, smooth oospores. Infected plants are hardly disfigured, but do flower only rarely.

hostplants

Papaveraceae, narrowly monophagous

Papaver argemone.

references

Brandenburger (1985a), Buhr (1965a), Doppelbaur, Huber & Poelt (1965a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Voglmayr, Montes-Borrego & Landa (2014a).

mod 31.viii.2018