Coniothyrium wernsdorffiae Laubert, 1905
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.
This is perhaps the most common, but certainly not the only one fungus infection of this type on rose!
Coniothyrium cystotricha (Schulzer) Saccrdo & Traverso, 1910.
Buhr (1965a), Dauphin & Aniotsbehere (1997a), Ruszkiewicz-Michalska (2006a).