Plant Parasites of Europe

leafminers, galls and fungi

Entyloma hieracii

Entyloma hieracii Sydow, 1919

on Hieracium, Pilosella

Entyloma hiercii on Pilosella officinarum

Pilosella officinarum, Belgium, prov. Limbourg, Hechtel-Eksel, Katershoeve, 8.xi.2022 © Carina Van Steenwinkel

Entyloma hiercii on Pilosella officinarum

affected leaf

Entyloma hiercii on Pilosella officinarum

same leaf, underside

Entyloma hiercii on Pilosella officinarum

Pilosella officinarum, Belgium, prov. Limbourg, Kuringen, Rode Vijvers, 12.xi.2022 © Carina Van Steenwinkel

Entyloma hiercii on Pilosella officinarum

spores in the leaf tissue

gall

flat, amphigenous leaf spots, up to a cm large, first yellow, finally brown and often with a perforated centre, with a pale border. Spores in the leaf tissue, ø 8-17 µm, transparent yellowish, smooth.

host plants

Asteraceae, narrowly oligphagous

Hieracium alpinum, amplexicaule, bifidum, caesium, chloropetalum, glaucnum, juranum, lachenalii & subsp. cruentifolium, laevigatum, lapponicum, maculatum, murorum, nigrescens, piliferum subsp. glanduliferum, pilosum subsp. villosiceps, prenanthoides, racemosum, sabaudum, schmidtii, sudeticum, transylvanicum, umbellatum, villosum; Pilosella aurantiaca, lactucella, officinarum, piloselloides.

references

Ainsworth & Sampson (1950a), Almaraz (1998a), Blumer (1946a), Brandenburger (1985a: 683), Buhr (1964b), Jage, Scholler & Klenke (2010a), Klenke (2002a), Klenke & Scholler (2015a), Kruse (2019a), Kruse, Thiel, Beenken ao (2018d), Savchenko & Heluta (2012a), Scholz & Scholz (2013a), Van Steenwinkel & Fraiture (2023a), Thiel, Klenke, Kruse, ao (2023a), Unamuno (1942a), Vanderweyen & Fraiture (2014a), Vánky (1994a).

Last modified 8.ix.2023