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).