Orbea huillensis

References

1. [1]Gemsbok Bean and Kalahari Truffle — Leffers A. · Gamsberg MacMillan; Namibia. · 2003 · ISBN 99916-0-491-X ↩︎Details of the traditional uses of over 200 species of plants in northeastern Namibia. Written for the non-expert, there is usually at least one photograph with each plant entry.
2. [2]African Flowering Plants Database — Conservatoire et Jardin Botaniques. · http://www.ville-ge.ch/musinfo/bd/cjb/africa/recherche.php ↩︎Contains information on over 150,000 plant names (including synonyms) giving a description and habitat, plus a distribution map.
3. [3]Cataloge of African Plants Collected by Dr. Friedrich Welwitsch in 1853 - 1861 — Hiern. W.P. · Longmans & Co.; London. · 1898 · http://www.biodiversitylibrary.org ↩︎In 6 volumes, it gives botanical descriptions and some uses of the plants. It can be downloaded from the Internet.