Senna petersiana (SA Tree List No. 213) was for long known as Cassia petersiana. It is a shrub or small tree of the Kruger National Park area and beyond the border in Swaziland, Mozambique, Zimbabwe and further afield. The leaves are pinnate without a terminal leaflet, a feature known as paripinnate. The leaves are alternate in their positions on the stems. Leaves have glands on the rachis and large leaf-like stipules at the base of their petioles. These stipules gave rise to the tree's common name of eared senna. The leaflets are lanceolate with asymmetric curvature and acutely attenuating tips. This can be observed in the picture provided.
The showy yellow flowers appear in large sprays from midsummer to winter. The fruit is a slender, hairy pod with slight constrictions between the seeds as can be seen in the photo. A butterfly, Catopsilia florella is known to breed on this tree (Coates Palgrave, 2002; Schmidt, et al, 2002).