Passalora dubia (Riess) Braun, 1995

on Atriplex, Chenopodium

Passalora dubia: leaf spots on Chenopodium album

Chenopodium album, Belgium, prov. Limbourg, Beringen, 7.vii.2018 © Carina Van Steenwinkel (nb: the pinkish spot in the centre of the lefttmost leaf did not bear colonies and might belong to a different species.)

Passalora dubia: leaf spots on Chenopodium album

same leaves, undersides

Passalora dubia: conidiophores

bundle conidiophores

Passalora dubia: conidiophores

bundle conidiophores

Passalora dubia: conidia

conidia

Passalora dubia: conidia

conidia

parasite

Conidiophores in bundles, ± 60-70 µm long; conidia 5-6 X 27-32, mostly 2-4-septate, sometimes constricted at the seta.

host plants

Amaranthaceae, oligophagous

Atriplex calotheca, littoralis, oblongifolia, patula, prostrata, sagittata; Chenopodium album, bonus-henricus, album.

synonyms

Cercospora chenopodii Fresenus, 1863; C. dubia (Riess) Winter, 1883.

references

Bakhshi, Arzanlou, Babai-ahari ao (2015a), Brandenburger (1985a: 120), Ellis & Ellis (1997a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer (2013a), Klenke & Scholler (2015a), Kruse (2014a), Ludwig (1974a), Poelt & Fritz-Schroeder (1983a), Roldan Garrigos & Honrubia García (1992a), Ruszkiewicz-Michalska (2006a), Świderska-Burek (2007a, 2015a), Unamuno (1943a).

mod 10.vii.2018