Plant Parasites of Europe

leafminers, galls and fungi

Peronospora rossica

Peronospora rossica Gäumann, 1923

on Dracocephalum

gall

upper side of the leaf with pale spots. Underside with a brownish purple down of erect conidiophores that apically several times are dichotomously branching, each branch ending upon an egg-shaped conidium.

host plants

Lamiaceae, monofaag

Dracocephalum ruyschiana.

references

Brandenburger (1985a: 528), Klenke & Scholler (2015a).

Last modified 12.xi.2022