Plasmopara angustiterminalis Novotelnova, 1962

on Ambrosia, Xanthium

gall

leaves with angular, brown spots; at the underside a white fungal down of erect, up to 140 µm high conidiophores that apically bear a few short branches, each one ending upon a oblong conidium (sporangium) Voglmayr, Fatehi & Constantinescu (2006a) give a detailed description.

host plants

Asteraceae, oligophagous

Ambrosia artemisifolia, psilostachya; Xanthium strumarium

notes

the form on A. artemisifolia probably represents a species on its own (Choi ao, 2009a).

references

Brandenburger (1985a: 627), Choi, Kiss, Vajna & Shin (2009a), Duarte, Choi, Soares & Barreto (2014a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Lee, Shin & Choi (2020a), Müller (2015a), Müller & Kokeš (2008a).