See text Sutherlandia is a genus of flowering plants in the family Fabaceae containing six known living species.
The genus was once organized as having a single species, S. frutescens, but later expanded to include more based on morphological characteristics.
However, later analysis found more genetic variation between populations than between taxa.
[1] The genus Sutherlandia is sometimes included in the genus Lessertia and it is morphologically and chemically similar to Lessertia, Astragalus, and other genera of the tribe Galegeae.
[2]