Maytenus undata, the koko tree, is a shrub or small to large tree sometimes reaching 10 m in height (SA Tree List No. 403). There is a form in the Lebombo Mountains with more leathery leaf texture and conspicuous venation. The species resembles M. oleosa that only occurs in central Pondoland in the Eastern Cape.
The leaves are elliptic, oblong to ovate and very variable in shape. The toothed margins have small brown glands at tooth tips.
It is distributed in the eastern parts of South Africa and widely in southern Africa. The habitat is mostly wooded, rocky hills, ravine forests and along forest edges (Coates Palgrave, 2002; Van Wyk and Van Wyk, 1997; Schmidt, et al, 2002).