Plant Parasites of Europe

leafminers, galls and fungi

Erysiphe pseudacaciae

Erysiphe pseudacaciae (Marchenko) Braun & Takamitsu, 2000

on Colutea, Robinia

Erysiphe pseudacaciae on Robinia pseudoacacia

Robinia pseudacacia, Belgium, prov. Antwerp, Meerhout © Carina Van Steenwinkel

Erysiphe pseudacaciae on Robinia pseudoacacia

upon heavy infestation the long flaccid appendages stick together and form a felt-like mass

Erysiphe pseudacaciae on Robinia pseudoacacia: cleistothecium

cleistothecium

Erysiphe pseudacaciae on Robinia pseudoacacia: asci

asci

Erysiphe pseudacaciae on Robinia pseudoacacia: tip of appendages

tip of the appendages

gall

mycelium amphigenous. Conidia solitary, elliptic, without fibrosin bodies. Cleistothecia with 3-6 asci, containing 4-5 spores. Appendages 5-10, inserted on the equator, generally 4-12 x the diameter; they are 0-1 septate, flaccid, brown at most at base; the tips are mostly several times irregularly branched, not flattened.

host plants

Fabaceae, oligophagous

Colutea arborescens; Robinia pseudoacacia.

synonyms

Microsphaera pseudacaciae (Marchenko) Braun, 1981; Trichocladia pseudacaciae Marčenko, 1979.

references

Beenken & Senn-Irlet (2016a), Bolay, Clerc, Braun, ao (2021a), Brandenburg (1985a: 314), Braun (1995a), Braun & Cook (2012a[“pseudoacaciae“]), Jage, Klenke & Kummer (2010a), Klenke & Scholler (2015a), Leysen (2017a), Mieslerová, Sedlářová, Michutová, ao (2020b), Negrean & Anastasiu (2006a).

Last modified 8.x.2022