Peronospora potentillae de Bary, 1863
on Potentilla
gall
leaves with yellow, eventually brown, spots. Their underside with a greyish-violet down, consisting of erect conidiophores that apically several times are dichotomously branching, each branch ending in an oval conidium.
hostplants
Rosaceae, narrowly monophagous
Potentilla argentea, aurea, grandiflora, indica, norvegica.
references
Brandenburger (1985a), Choi, Constantinescu & Shin (2007a), Doppelbaur, Huber & Poelt (1965a), Göker, García-Blázquez, Voglmayr ao (2009a), Gustavsson (1959a), Jage, Klenke, Kruse ao (2017a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Müller & Kokeš (2008a), Mułenko, Kozłowska, Bacigálová ao (2014a), Voglmayr (2003a).