Peronospora gei Sydow, 1923
on Geum
gall
Underside of leaves with a greyish-white down, consisting of erect conidiophores that apically several times are dichotomously branching, each terminal branch ending in a ± globular conidium.
hostplants
Rosaceae, monophagous
Geum canadense, coccineum, magellanicum, montanum, rivale, triflorum, urbanum.
references
Brandenburger (1985a), Buhr (1965a), Doppelbaur, Huber & Poelt (1965a), Jage, Klenke, Kruse ao (2017a), Müller (2015a), Săvulescu (1948a).