Peronospora apiospora Poirault

on Ranunculus

gall

underside of the leaf with a greyish purple fungal down of high erect conidiophores that apically several times are dichotomously branching, each branch ending upon an elliptic conidium.

hostplants

Ranunculaceae, nauw monophagous

Ranunculus gramineus.

references

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