Plant Parasites of Europe

leafminers, galls and fungi

Erysiphe circaeae

Erysiphe circaeae Junell, 1967

on Circaea

Erysiphe circaeae on Circaea spec.

Circaea spec., Belgium, prov. Limburg, Bilzen, Munsterbos © Carina Van Steenwinkel

Erysiphe circaeae: appendages

cleistothecium with appendages

Erysiphe circaeae: cleistothecium

cleistothecium and asci


mycelium amphigenous, often ± persistent. Conidia solitary, elliptic, without fibrosin bodies. Cleistothecia with 3-5 asci, that contain 3-5 spores. Appendages not numerous, sub-equatorial, 0.5-3 x the diameter; they are mycelioid, septate, brown, sometimes irregularly branched.

host plants

Onagraceae, monophagous

Circaea alpina, x intermedia, lutetiana.

A citation of Oenothera biennis by Dynowska ao must refer to Erysiphe howeana.


Braun (1995a), Braun & Cook (2012a), Bresinsky (2016a), Dynowska, Fiedorowicz & Kubiak (1999a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Jage, Klenke & Kummer (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2019a), Kruse, Thiel, Frauenberger ao (2019a), Leysen (2017a), Ruszkiewicz-Michalska (2006a), Ruszkiewicz-Michalska & Michalski (2005a) , Scholler, Reinhard & Schubert (1996a).

Last modified 29.xi.2021