Plant Parasites of Europe

leafminers, galls and fungi

Hyaloperonospora praecox

Hyaloperonospora praecox Voglmayer & Göker, 2011

on Erophila

Hyaloperonospora praecox on Erophila verna

Erophila verna, Belgium, prov. Antwerp, Mol, Leeuwerikenheide, 2.iv.2021 © Carina Van Steenwinkel: the plant, although infected, is not malformed

Hyaloperonospora praecox on Erophila verna

the apical parts of the older larvae are infected

Hyaloperonospora praecox on Erophila verna

the down is loosely dispersed over the leaf

Hyaloperonospora praecox: conidiophore


Hyaloperonospora praecox: conidiophore

ultimate brachings

Hyaloperonospora praecox: oogonia

oogonia embedded in the leaf tissue

Hyaloperonospora praecox: oogonium


Hyaloperonospora praecox: haustorium

a pear-shaped haustorium


The plant is not disfigured, and the leaves are not bleached or galled; at the tip of the older leaves of the rosette a faint fungal down, consisting of erect, distally strongly branched conidiophores.

host plants

Brassicaceae, monophagous

Erophila verna.


Chater, Woods, Stringer, ao (2020a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Kruse (2014a), Voglmayer & Göker (2011a).

Last modified 5.x.2021