Cacara orbicularis (Welw. ex Baker) Hiern
Dolichos ellenbeckii Harms
Dolichos mitis A.Rich.
Dolichos orbicularis (Welw. ex Baker) Baker f.
Dolichos pseudopachyrhizus Harms
Dolichos seineri Harms
Neorautanenia amboensis Schinz
Neorautanenia edulis C.A.Sm.
Neorautanenia orbicularis (Welw. ex Baker) Torre
Neorautanenia pseudopachyrhiza (Harms) Milne-Redh.
Neorautanenia seineri (Harms) C.A.Sm.
Pachyrhizus orbicularis Welw. ex Baker
Pueraria hochstetteri Chiov.
Neorautanenia mitis is a very variable, subshrubby herb, producing stems 2 metres or more long that can be erect, climbing, scrambling or entirely prostrate, from a tuberous rootstock[
]. The rootstock is often conical, frequently more than 40 cm long and weighing 10 - 15 kg[
The plant is harvested from the wild and used as an insecticide.
The roots contain saponins and have been used as a fish poison[
Although poisonous, saponins are poorly absorbed by the human body and so most pass through without harm. Saponins are quite bitter and can be found in many common foods such as some beans. They can be removed by carefully leaching in running water. Thorough cooking, and perhaps changing the cooking water once, will also normally remove most of them. However, it is not advisable to eat large quantities of raw foods that contain saponins. Saponins are much more toxic to some creatures, such as fish, and hunting tribes have traditionally put large quantities of them in streams, lakes etc in order to stupefy or kill the fish[
Tropical Africa - Cote D'Ivoire to Somalia, south to Namibia, northern S. Africa and Mozambique.
Drier areas of Africa, in grassland, bushland and open woodland, often in rocky places[
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A plant of drier tropical areas.
Requires a well-drained soil and a position in full sun[
This species has a symbiotic relationship with certain soil bacteria; these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[
The leaves and roots are used as an insecticide[
A decoction of the tuberous roots has been used for removing ticks :from sheep and goats.[
]. An alcoholic extract of the roots has sometimes been efficient as a pesticide on the bean aphid, but were not reliable. The roots are not of commercial interest, but could be of value locally[
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