Synchytrium fulgens Schröter, 1873

on Clarkia, Oenothera

Oenothera laciniata (from Kirschner): a single pustule, surrounded by swollen cells, each one containing a red sporangium

gall

tiny pustules, consisting of a few enlarged cells only, often in large numbers on basal leaves. They consist of a single infected cell, surrounded by a 1-3 layers of not infected, yet swollen and discoloured cells. During summer the galls are yellow-orange to lavender, in autumn, when resting sporangia are formed, they are lavender-red to reddish brown.

host plants

Onagraceae, oligophagous

Clarkia; Oenothera biennis, laciniata.

references

Brandenburger (1985a), Buhr (1965a), Karling (1964a), Kirschner (2015a), Klenke & Scholler (2015a), Scheuer & Bechter (2012a), Tomasi (2014a).