Peronospora digitalis Gäumann, 1923

on Digitalis

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

leaf with beginning infestation

same leaf, underside

heavily infested leaf

same leaf, underside

conidiophore

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: 564), Buhr (1956b), Chater, Woods, Stringer, ao (2020a), Dietrich (2013a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Kruse (2019a), Müller (2015a), Müller & Kokeš (2008a), Negrean (1995a)