Coniothyrium wernsdorffiae Laubert, 1905

on Rosa

gall

red spots on the shoots; as they grow the centre changes its colour to buff, and pycnidia become apparent as tiny black dots. Around the infect malignant growth may occur. Higher parts of the shoot tend to die off.

hostplants

Rosaceae, monophagous

Rosa.

notes

This is perhaps the most common, but certainly not the only one fungus infection of this type on rose!

synonyms

Coniothyrium cystotricha (Schulzer) Saccrdo & Traverso, 1910.

references

Buhr (1965a), Dauphin & Aniotsbehere (1997a), Ruszkiewicz-Michalska (2006a).

mod 2.vi.2018