Peronospora embergeri Mayor & Viennot-Bourgin, 1949

on Euphorbia

gall

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

hostplants

Euphorbiaceae, narrowly monofaag

Euphorbia characias.

references

Brandenburger (1985a), García-Blázquez, Constantinescu, Tellería & Martín (2007a), Gustavsson (1991a), Klenke & Scholler (2015a).

mod 18.viii.2017