Plant Parasites of Europe

leafminers, galls and fungi

Erysiphe necator

Erysiphe necator Schweinitz, 1834

on Cissus, Parthenocissus, Vitis

Erysiphe necator on Vitis vinifera

Vitis vinifera, Belgium, prov. Antwerp, Mol © Carina Van Steenwinkel

Erysiphe necator: cleistothecium


Erysiphe necator: appendages


Erysiphe necator: appendages


Erysiphe necator: ascus


Erysiphe necator on Vitis vinifera

Vitis vinifera, Nieuwendam

Erysiphe necator on Vitis vinifera

underside of the leaf

Erysiphe necator on Vitis vinifera


Erysiphe necator: cleistothecium

cleistothecium with asci

Erysiphe necator: appendage

base of an appendage


mycelium amphigenous, also on the fruits, mostly dispersed, almost persistent. Appressoria lobed or multilobed, single or paired. Conidia solitary, elliptic, without fibrosin bodies. Foot cell of conidiophore twisted once or twice. Cleistothecia with 4-8 asci, containing 4-6 spores. Appendages 10-30, equatorial, 1-6 x the diameter; they are stiff, brown over at least the basal part, with 4-9 septa; apex not enlarged, loosely or tightly circinate.

host plants

Vitaceae, oligophagous

Cissus alata, antarctica; Parthenocissus inserta, quinquefolia, tricuspidata; Vitis amuresis, vinifera.


Uncinula necator (Schweinitz) Burrill, 1892; Oidium tuckeri Berkeley, 1847.


In Europe the var. necator.


Ampelomyces quisqualis.


Angeli, Pellegrini & Pertot (2009a), Beenken & Senn-Irlet (2016a), Braun (1995a), Braun & Cook (2012a), Braun, Cunnington, Brielmaier-Liebetanz, Ale-Agha & Heluta (2003a), Bresinsky (2016a), Hajjeh, Miazzi & Faretra (2008a), Jage, Klenke & Kummer (2010a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kruse (2019a), Kruse & Jage (2014a), Leysen (2017a), Mieslerová, Sedlářová, Michutová, ao (2020b), Mułenko, Piątek, Wołczańska ao (2010a), Negrean & Anastasiu (2006a), Ruszkiewicz-Michalska & Michalski (2005a), Unamuno (1943a).

Last modified 19.vii.2022