This member of the
Asclepiadaceae* family was
given this name by Nicholas Edward
Brown in 1907.
It is found in Mozambique and Zimbabwe, growing in a well drained soil with some water and
some sun. The
caudex can grow up to fifteen centimetres in diameter, the stem to 50
centimetres height. The flowers are green.
The genera name from Greek
rhaphis; 'beet-root' and akme; 'sharpness' possibly
referring to the taste of the roots - haven't tried yet. The species
name after Mrs Rose Monteiro, wife of Portuguese naturalist Joachim
Monteiro, who collected plants in Angola and Mozambique.
*)Accordantly to the latest taxonomic system; APG IV 2016, Asclepiadaceae is now part of the Apocynaceae.