Peronospora polygoni Halsted, 1919

Chromista, Oomycota, Oomycetes, Peronosporales, Peronosporaceae

on Persicaria, Polygonum

Peronospora polygoni on Polygonum aviculare

Polygonum aviculare, Belgium, prov. Antwerp, Mol, Heidenhuizen © Carina Van Steenwinkel

Peronospora polygoni on Polygonum aviculare

infected leaf, upperside; here down also on the upperside of the leaf!

Peronospora polygoni on Polygonum aviculare

same leaf, underside

Peronospora polygoni: conidiophore

conidiophores

Peronospora polygoni: conidia

conidia

gall

leaves diffusely yellowed. Their underside with a grey down, consisting of erect conidiophores that apically several times are dichotomously branching, each branch ending in a oval conidium.

hostplants

Polygonaceae, narrowly oligophagous

Persicaria bistorta, mitis, vivipara; Polygonum aviculare.

references

Belbahri, Calmin, Pawlowski & Lefort (2005a), Brandenburger (1985a: 84), Cunnington (2008a), Doppelbaur, Huber & Poelt (1965a), García-Blázquez, Constantinescu, Tellería & Martín (2007a), Göker, García-Blázquez, Voglmayr ao (2009a), Gustavsson (1959a, 1991a), Klenke & Scholler (2015a), Kruse (2014a), Müller & Kokeš (2008a), Săvulescu (1948a), Thines, Telle, Ploch & Runge (2009b), Voglmayr (2003a).

21/05/2017

pub 21.v.2017 · mod 6.vii.2017