Peronospora silvestris Gäumann, 1981

on Veronica

gall

leaves pale, may be disfigured. Underside with a greyish-violet down, consisting of 0.4 mm high erect conidiophores that apically several times are dichotomously branching, each terminal branch ending in an ovoid conidium.

hostplants

Plantaginaceae, narrowly monophagous

Veronica urticifolia.

synonyms

both Brandenburger and Klenke & Scholler consider this species conspecific with P. grisea. However, the molecular genetic results of Riethmüller ao rather indicate an independent species.

references

Brandenburger (1985a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Riethmüller, Voglmayr, Göker ao.

mod 2.ix.2018