Plant Parasites of Europe

leafminers, galls and fungi

Erysiphe flexuosa

Erysiphe flexuosa (Peck) Braun & Takamatsu, 2000

on Aesculus

Erysiphe flexuosa: cleistothecium on Aesculus x carnea

Aesculus x carnea, Belgium, prov. Antwerp, Meerhout © Carina Van Steenwinkel

Erysiphe flexuosa: wavy appendages

long, wavy, appendages

Erysiphe flexuosa: spiny appendages

short, spiny appendagges


thin, greyish-white film that in autumn covers the upperside of young and old leaves. At the underside numerous brownish-black cleistothecia. They bear in their lower part a large number of horizontally extending stiff, wavy appendages, ending in a small hook; distally there is number a of short, stiff appendages with a rough surface. Conidia solitary, without fibrosin bodies, elliptic, opaque.

host plants

Sapindaceae, monofaag

Aesculus x bushii, x carnea, chinensis, glabra, hippocastanum, indica, x neglecta, pavia.


North American species that appeared in Europe around the turn of the century, and now is colonizing the continent at high speed from north to south.


Ale-Agha, Boyle, Braun ao (2008a), Bacigálová & Marková (2006a), Beenken & Senn-Irlet (2016a), Braun & Cook (2012a), Bresinsky (2016a), Butin & Kehr (2002a), Caetano & Ramos (2008a), Giordano, Bocca & Gonthier (2013a), Henricot (2009a), Jage, Klenke & Kummer (2010a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Kiss, Vajna & Fischl (2004a), Klenke & Scholler (2015a), Kruse (2014a, 2019a), Kruse & Jage (2014a), Leysen (2017a), Mieslerová, Sedlářová, Michutová, ao (2020b), Milevoj (2004a), Mułenko, Piątek, Wołczańska ao (2010a), Nali (2006a), Negrean & Anastasiu (2006a), Pricop & Tănase (2007a). Roques, Cleary, Matsiakh & Eschem (2017a), Ruszkiewicz-Michalska & Michalski (2005a), Scheuer & Bechter (2012a), Sucharzewska, Dynowska, Kubiak ao (2012b), Stankeviciene, Snieskiene & Lugauskas (2010a), Talgø, Sundheim, Gjærum ao (2010a), Talgø, Spies, Perminow ao (2012a), Werner, Irzykowska & Karolewski (2012a), Wołczańska & Mułenko (2002a), Zimmermannová-Pastirčáková, Adamska, Błaszkowski ao (2002a), Zimmermannová-Pastirčáková & Pastirčák (2002a).

Last modified 30.xi.2021