Plasmopara wilsonii Voglmayr, Fatehi & Constantinescu, 2006

Chromista, Oomycota, Oomycetes, Peronosporales

on Erodium, Geranium

Plasmopara wilsonii on Geranium molle

Geranium molle, Belgium, prov. Antwerp, Mol © Carina Van Steenwinkel

Plasmopara wilsonii on Geranium molle

same leaf, underside

Plasmopara wilsonii: down on Geranium molle

the down is white (the conidia are colourless)

Plasmopara wilsonii conidiolphores

conidiophores

Plasmopara wilsonii: terminal branches

terminal branches of conidiophores with swollen apex

Plasmopara wilsonii: conidia

conidia with a low papilla

gall

sharply delimited upper surface leaf spots, initially some mm large, ultimately often filling the entire leaf; pale yellowish at first, in the end violoaceous brown. Underside with a greyish white felty down, consisting of conidiophores. These are 0.2 to almost 0.5 mm high, very even in thickness; the ultimate branches are swollen at the very tip. Voglmayr, Fatehi & Constantinescu (2006a) present a detailed description.

hostplants

Geraniaceae, oligophagous

Geranium molle, phaeum.

Found by Kruse ao in Germany on G. phaeum. The species was described from North America, and there it was recorded from, among other species, Geranium molle and Erodium cicutarium.

references

Kruse, Thines & Choi (2016a), Voglmayr, Fatehi & Constantinescu (2006a).

10/05/2017

pub 10.v.2017 · mod 28.vi.2017