Tree or glabrous shrub occasionally climbing with thorny stems, glabrous imparipinnate leaves to 150mm long with 5-61 minutely serrulate leaflets to 46mm x 22mm, prickles to 2mm long. Sub-terminal minutely serrulate panicles, 4 sepals to 1mm long, 4 petals 1mm long. Globose follicles to 7mm diameter with strong citrus smell