The caudex by Voytek Zychowski.
This member of the Asclepiadaceae* family was described by
Friedrich Richard Rudolf
Schlechter in 1905. It's found in the
Transvaal and Kwa-Zulu-Natal
of South Africa, growing in a
well-drained soil with some water and some sun. The caudex can grow to
ten centimetres in diameter, the branches 20 centimetres long. The
flowers are white an green.
*This family might
been incorporated in the Apocynaceae