A shrub or a tree, Myrianthus serratus can reach a height of 16 m, its bark is yellowish grey to reddish brown and its stem typically has appressed hairs. Leaflets are elliptical to oblanceolate in shape, with margins that are serrate to dentate, they can reach up to long and wide. The upper surface of the leaves are usually devoid of hairs except around the veins, beneath the leaves tend to be glabrescent. The petiole is long and the stipules can reach up to long. Infructescence with up to 4 fruits.
Subspecies
Myrianthus serratus as two accepted infraspecies:Myrianthus serratus var. letestui RuiterMyrianthus serratus var. ''serratus''