Plant Parasites of Europe

leafminers, galls and fungi

Bremia stellata

Bremia stellata (Desmazières) Kochman & Majewski, 1970

on Sonchus

Bremia stellata op Sonchus spec.

Sonchus spec., Belgium, prov. Limbourg, Reppel, Abeekvallei, 13.viii.2021 © Carina Van Steenwinkel: infected leaf; leaf not (yet?) disfigured

Bremia stellata op Sonchus spec.

detail of the underside with down

Bremia stellata op Sonchus spec.

conidiophore (congo-red staining)

Bremia stellata op Sonchus spec.

terminal branchings

Bremia stellata op Sonchus spec.

conidia

gall

thin whitish hypophyllous fungal down at the underside of the leaf, consisting of erect, apically multiply branched conidiophores. Each ultimate branch ends in a swelling with four short stalks, each one bearing an ovoid conidium. Infected plants may be strongly disfigured

host plants

Asteraceae, monophagous

Sonchus aquatilis, arvensis, asper & subsp. glaucescens, bulbosus, oleraceus, palustris, tenerrimus.

synonyms

Bremia sonchicola (Schlechtendal) Sawada, 1927; B. sonchi Sawada, 1914.

references

Abdul Haq, Shahzad & Qamarunnisa (2015a), Brandenburger (1985a), Choi & Thines (2015a), Doppelbaur & Doppelbaur (1973a), Doppelbaur, Huber & Poelt (1965a), Jage, Klenke, Kruse ao (2017a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kruse (2019a), Müller (2015a), Riethmüller, Voglmayr, Göker, Weiß & Oberwinkler (2002a).

Last modified 15.viii.2021