Peronospora verbasci Gäumann, 1923

on Verbascum

gall

development of the plant disturbed; upperside of the lef with yellow spots. Underside there with abrownish purple fungal cover of 0.8 mm high erect conidiophores that apically several times are branching, each terminal branch ending in a conidium.

hostplants

Scrophulariaceae, monophagous

Verbascum blattaria, chaixii subsp. austriacum, densiflorum, lychnitis, nigrum, phlomoides, speciosum, thapsus & subsp. montanum

references

Brandenburger (1985a), Doppelbaur, Huber & Poelt (1965a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Müller (2015a), Müller & Kokeš (2008a), Săvulescu (1948a).

mod 2.ix.2018