What walnut?

What walnut?

Observation - What walnut? - UK and Ireland. Description: This is a repost - I have revisited the plant and taken more photos. The plant is either a young tree or an outgrowth from a mature tree (J regia). The leaves are galled by Walnut leaf mite (Aceria erinoea?). There are Black walnut trees in the area. Is a

This is a repost - I have revisited the plant and taken more photos. The plant is either a young tree or an outgrowth from a mature tree (J regia). The leaves are galled by Walnut leaf mite (Aceria erinoea?). There are Black walnut trees in the area. Is a hybrid possible - I have not been able to get a decent photo to compare