Plant Parasites of Europe

leafminers, galls and fungi

Erysiphe chouardii

Erysiphe chouardii (Durrieu) Braun & Takamatsku, 2000

on Ononis


mycelium amphigenous, mainly hypophyllous, thin, white, generally evanescent. Appressoria ± lobed. Conidia formed solitary, without fibrosin bodies. Cleistothecia 90-180 µm, with 5-12 asci that contain 3-4 spores. Appendages 5-23, ± equatorial, 3-6 x the diameter; they are not mycelioid, flaccid, 0-2 septate, only near the basis brown; apices several times irregularly bifurcating in quick succession.

host plants

Fabaceae, monophagous

Ononis fruticosa, tridentata.


Microsphaera chouardii Durrieu, 1968.


Braun (1995a), Braun & Cook (2102a), Leysen (2017a).

Last modified 29.xi.2021