Gall?

Gall?

Observation - Gall?. Description: A possible gall on leaves of Dog's mercury. Leaves are inrolled upwards at the margin. This is not given as a gall in the FSC British Plant Gall. No mites seen with naked eye

A possible gall on leaves of Dog's mercury. Leaves are inrolled upwards at the margin. This is not given as a gall in the FSC British Plant Gall. No mites seen with naked eye