Tree identification help please.

Tree identification help please.

Observation - Tree identification help please. - UK and Ireland. Description: Straight trunk. Whitish smooth bark. Opposite pairs of leaves. Deeply indented. Growing in a disus

Straight trunk. Whitish smooth bark. Opposite pairs of leaves. Deeply indented. Growing in a disused local authority nursery. Originally planted in a large container, which the tree had broken out of, for transplanting elsewhere.