This member of the Fabaceae was given this name by Christo Albertyn Smith in 1932. It is found in Botswana, Mozambique, Namibia, South Africa and Zimbabwe, growing in well-drained soil with some water and lots of sun. The caudex can grow to 50 centimetres, the vines from 40 to 150 centimetres. The flowers are dark blue or mauve, bright inside with a greyish outside. Rarely, flowers are seen yellow.
The genera name from Greek neos; 'new' and Rautanenia is a genus in the Alismataceae family.
The species name after Franz Seiner, 1874-1940, an Austrian journalist, traveller and collector. Seen as a member of the Papilonaceae family. Tribe: Phaseolea.e The flower by Roger and Alison Heath, Plantsoftheworldonline.org.

