Plant Parasites of Europe

leafminers, galls and fungi

Peronospora violacea

Peronospora violacea Berkeley, 1860

on Caprifoliaceae

Peronospora violacea on Dipsacus pilosus

Dipsacus pilosus, Belgium, prov. Limbourg, Eggertingen, Lerebeek, Brullenbos, 10.vii.2022 © Carina Van Steenwinkel

Peronospora violacea on Dipsacus pilosus

light infection

Peronospora violacea on Dipsacus pilosus

serious infestation

Peronospora violacea on Dipsacus pilosus

with a hand lense the conidiophores are vsible only difficultly

Peronospora violacea on Dipsacus pilosus

anther filament with conidiophores and oospores

Peronospora violacea on Dipsacus pilosus

conidiophore

Peronospora violacea on Dipsacus pilosus

ultimate branchings

Peronospora violacea on Dipsacus pilosus

conidia

gall

flowerheads and the individual flowers strongly browned, often malformed. On the flowers small fungus colonies, consisting of erect, distally repeatedly dichotomously branched conidiophores; the conidia measure 17-19 x 40-39 µm.

host plants

Caprifoliaceae, oligophagous

Dipsacus fullonum, laciniatus, pilosus; Knautia arvensis, dipsacifolia, drymeia, kitaibelii; Lomelosia graminifolia; Scabiosa columbaria, lucida, ochroleuca; Succisa pratensis.

references

Brandenburger (1985a: 599), Buhr (1964b, 1965a), Chater, Woods, Stringer, ao (2020a), Dauphin & Aniotsbehere (1997a), Doppelbaur & Doppelbaur (1974a), Doppelbaur, Huber & Poelt (1965a), Ellis & Ellis (1997a), García-Blázquez, Constantinescu, Tellería & Martín (2007a), Göker, García-Blázquez, Voglmayr ao (2009a), Gustavsson (1991a), Jage, Klenke, Kruse ao (2016a, 2017a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2019a), Kummer (2009a), Mayor (1967a), Müller (2015a), Müller & Kokeš (2008a), Prell (1943a), Redfern & Shirley (2011a), Riethmüller, Voglmayr, Göker, Weiß & Oberwinkler (2002a), Voglmayr (2003a) .

Last modified 15.vii.2023