Strychnos pungens

About

Strychnos pungens is a tree which belongs to the Loganiaceae. Usually about 5 m (16 ft) tall, occurring in mixed woodland or in rocky places. Branches are short and rigid. Leaves are smooth, stiff, opposite, elliptic and with a sharp, spine-like tip. Occurring in South Africa on the Witwatersrand, Magaliesberg and further north to northern Namibia, northern Botswana and Zimbabwe.

Summary from Wikipedia