Sonchus oleraceus, Nieuwendam

hyphae with appressoria

conidia

conidia chain

germinating conidia

gall

amphigenous white fungal bloom. Appressoria nipple-shaped or indistinctly lobed. Conidia oval, without fibrosin bodies. Cleistothecia 80-130 µm, containing 6-15 asci, each with 2 spores. Appendages numerous, on and below the equator, 0.3 – 3 x diameter; they are mycelioid, rarely branched, septate, brown.

host plants

Asteraceae, monofaag

Sonchus arvensis & subsp. uliginosus, asper & subsp. glaucescens, congestus, maritimus, oleraceus, palustris, tenerrimus.

references

Braun & Cook (2012), Bresinsky (2016a), Jage, Klenke, Kruse ao (2016a), Jage, Klenke & Kummer (2010a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Kruse & Jage (2014a), Mieslerová, Kitner, Petřeková, ao (2020a), Scholler, Reinhard & Schubert (1996a [E. cichoracearum on Sonchus]).