Plant Parasites of Europe

leafminers, galls and fungi

Erysiphe platani

Erysiphe platani (Howe) Braun & Takamatsu, 2000

on Platanus

Erysiphe platani on Platanus hispanica

Platanus hispanica, Dronten © Arnold Grosscurt: a normal leaf, and two severely infested ones

Erysiphe platani on Platanus hispanica

Platanus hispanica, Belgium, Liège © Jean-Yves Baugnée, det. Arthur Vanderweyen

Erysiphe platani on Platanus hispanica


Erysiphe latani on Platanus spec.

Platanus spec., Arnhem, Spijkerkwartier, 2.xii.2021 © Kees van Oorde

Erysiphe latani on Platanus spec.

cleistothecium with appendages


mycelium amphigenous, dense, white, often persistent and causing malformations. Appressoria lobed, solitary or paired, sometimes one per cell, sometimes in groups of 2-6. Conidia solitary, short-elliptic, without fibrosin bodies. Foot cell of conidiophore basally generally ± flexuous. Cleistothecia with 3-6 asci, that contain 3-5 spores. Appendages 6-18, equatorial, 1-2 x the diameter; they are ± straight, brown at the base, 0-1 septate, unbranched; apices 3-5 times regularly forked.

host plants

Platanaceae, monophagous

Platanus acerifolia, hispanica, occidentalis, orientalis, racemosa.

Observed in Switzerland on Ailanthus altssima (Simaroubiaceae) (Beenken & Senn-Irlet).


Microsphaera platani Howe, 1874.


North American species that probably at the beginning of the 1960s has been introduced into southern Europe, and now is expanding rapidly over Europe (Scholler ao, 2012a).

Heluta a.o. found the cleistotheccial appendages much longer, up to three times the diameter.


Beenken & Senn-Irlet (2016a), Brandenburger (1985a), Braun (1997a), Braun & Cook (2012a), Bresinsky (2016a), Heluta, Korytnianska & Akata (2013a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kruse (2019a), Leysen (2013a, 2017a), Mieslerová, Sedlářová, Michutová, ao (2020b), Negrean & Anastasiu (2006a), Scholler, Hemm & Lutz (2012a).

Last modified 6.xii.2021