Melicope jonesii is a tree that typically grows to a height of. The leaves are arranged in oppositepairs and trifoliate on a petiole long. The leaflets are elliptical, long and wide. The flowers are arranged in panicles long in leaf axils and are bisexual, the sepals round and about long and fused at the base, the petals greenish or cream-coloured, long and there are four stamens. Flowering has been recorded in January and February and the fruitconsists of up to four follicles long and fused at the base containing shiny black seeds.