This member of the
Asclepiadaceae* family was
given this name by Nicholas Edward Brown in
1895. It is found in Angola and Tanzania, growing in girth or other
well drained soil with some water and lots of sun. The caudex can
grow to 20 centimetres in diameter. The stem to 60 centimetres
height. The flowers are greenish and red-brown.
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 as it was found in Angola.
*)Accordantly to the latest taxonomic system; APG IV 2016, Asclepiadaceae is now part of the Apocynaceae.