Peronospora ficariae Tulasne, 1854

on Ranunculus

Peronospora ficariae on Ficaria verna

Ficaria verna, Belgium, prov. Antwerp, Laakdal, Eindhoutberg © Carina Van Steenwinkel

Peronospora ficariae on Ficaria verna

underside

Peronospora ficariae on Ficaria verna

the conidiophores erupt through the stomata

Peronospora ficariae on Ficaria verna

conidiophore (stained with congo red)

Peronospora ficariae on Ficaria verna

Ficaria verna, Denekamp, lg. Singraven

Peronospora ficariae: conidiophore

the conidiophores are distally strongly, dichotomously branched. (The conidia had already fallen off, or were dry and shrivelled).

gall

upperside of the leaves with paled, slightly embossed patches; at the corresponding underside a greyish fungal bloom, consisting of erect, distally several times dichotomously branching conidiophores. The conidia measure 12-35 x 13-31 µm.

hostplants

Ranunculaceae, monofaag

Ficaria verna, ? Ranunculus flammula.

On the basis of the synonymy of P. glacialis also: Beckwithia glacialis.

synonyms

Peronospora glacialis (Blytt) Gäumann, 1923.

references

Blumer (1946a), Brandenburger (1985a), Buhr (1965a), Doppelbaur, Huber & Poelt (1965a), García-Blázquez, Constantinescu, Tellería & Martín (2007a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a), Losa España (1944a), Müller (2015a), Müller & Kokeš (2008a), Redfern & Shirley (2011a), Riethmüller, Voglmayr, Göker ao (2002a), Săvulescu (1948a).

25/05/2017

pub 25.v.2017 · mod 15.viii.2017