Bremia tulasnei (Hoffmann) Sydow, 1923

on Jacobaea, Senecio

Bremia tulasnei on Jacobaea vulgaris

Jacobaea vulgaris, België, prov. Antwerp, Mol © Carina Van Steenwinkel

Bremia tulasnei on Jacobaea vulgaris

underside of an infected part of the leaf

Bremia tulasnei: conidiophores

conidiophore (congo-red staining)

Bremia tulasnei: conidia

conidia

Bremia tulasnei on Jacobaea vulgaris

Jacobaea vulgaris, Belgium, prov. Antwerp, Mol, de Maat © Carina Van Steenwinkel

gall

externally hardly different from Bremia lactucae; molecular-genetic analyses nevertheless shows that is is an independent species.

hostplants

Asteraceae, narrrowly oligophagous

Jacobaea alpina, aquatica, subalpina, vulgaris; Senecio duriaei, elegans, gallicus, inaequidens, leucanthemifolius & subsp. vernalis, ovatus, polyodon, sylvaticus, viscosus, vulgaris.

synonyms

Brandenburger and Klenke & Schoiller consider tulasnei identical with B. lactucae.

references

Brandenburger (1985a), Choi & Thines (2015a), Doppelbaur & Doppelbaur (1974a), Doppelbaur, Huber & Poelt (1965a) , Klenke & Scholler (2015a), Scheuer & Bechter (2012a), Thines, Runge, Telle & Voglmayr (2010a).

01/11/2016

pub 3.iii.2017 · mod 3.viii.2017