Bean gall on sallow

Bean gall on sallow

Observation - Bean gall on sallow - UK and Ireland. Description: A yellowy green lump growing next to the central vein on the underside of a leaf. There is a mark on the upperside and the leaf is raised around it (second picture)

A yellowy green lump growing next to the central vein on the underside of a leaf. There is a mark on the upperside and the leaf is raised around it (second picture)