Peronospora chlorae de Bary, 1872

on Blackstonia

gall

leaves pale, may be disfigured. Underside with a greyish-violet down, consisting of 0.4 mm high erect conidiophores that apically several times are dichotomously branching, each terminal branch ending in a conidium.

host plants

Gentianaceae, monophagous

Blackstonia perfoliata & subsp. imperfoliata + serotina.

references

Brandenburger (1985a: 493), Buhr (1965a), García-Blázquez, Constantinescu, Tellería &a Martín (2007a), Jage, Klenke, Kruse ao (2017a), Gustavsson (1991a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a).