This member of the Apocynaceae family was described by John Gilbert Baker in 1882. It is found on Madagascar, growing in a well drained soil with some water and some sun. The stem will grow up from ten to 100 centimetres in diameter and reach a height of 25 centimetres. The flowers are yellow.
The genera name from Greek; pachys; 'thick' and Greek podion; 'small foot' for the thick caudiciform trunk, formed by some species. The species name means 'leaves borne in a rosette'. This one is P. r. var. horombense seen in Madagascar. A flowering wild plant from Palkowitschia.cz.

