Peronospora digitalis Gäumann, 1923

on Digitalis

Peronospora digitalis on Digitalis purpurea

Digitalis purpurea, Belgium, prov. Antwerp, Balen, Griesbroek, 16.v.2019 © Carina Van Steenwinkel

Peronospora digitalis on Digitalis purpurea

leaf with beginning infestation

Peronospora digitalis on Digitalis purpurea

same leaf, underside

Peronospora digitalis on Digitalis purpurea

heavily infested leaf

Peronospora digitalis on Digitalis purpurea

same leaf, underside

Peronospora digitalis: conidiophore

conidiophore

Peronospora digitalis: conidium

conidium

gall

leaves with brownish spots. Their underside with a greyish-white to brownish violet down, consisting of erect conidiophores that apically several times are branching, each branch ending in a conidium.

host plants

Plantaginaceae, monophagous

Digitalis grandiflora, lutea, purpurea.

synonyms

the much-used spelling “digitalidis” is not correct (Index Fungorum, 2015).

references

Brandenburger (1985a), Buhr (1956b), Dietrich (2013a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Kruse (2019a), Müller (2015a), Müller & Kokeš (2008a), Negrean (1995a)

mod 21.vii.2019