Hyaloperonospora nasturtii-aquatici (Gäumann) Voglmayr, 2014
on Cardamine, Nasturtium
Cardamine hirsuta, Belgium, prov. Limbourg, 13.iv.2021 © Carina Van Steenwinkel
Cardamine flexuosa, Belgium, prov. Flemish Brabant, Averbode, Vierkensbroek, 2.iv.2021 © Carina Van Steenwinkel: early stage of infection
conidiophore
terminal branchings
conidia
conidium; size range was 15-18 x 18-22 µm.
gall
upperside of the leaf with pale spots, margin often downfolded. Underside with a greyish down of 0.9 mm high erect conidiophores that apically several times are branching, each tip bearing am ovoid conidium.
host plants
Brassicaceae, oligophagous
Cardamine amara, flexuosa, hirsuta, pratensis; Nasturtium officinale.
synonyms
Peronospora nasturtii-aquatici Gäumann, 1918.
references
Brandenburger (1985a), Buhr (1965a), Chater, Woods, Stringer, ao (2020a), Doppelbaur, Huber & Poelt (1965a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Kruse (2019a), Müller (2015a), Tomasi (2014a).