Othonna koos-bekkeri is a new shrubby Othonna from the mountains of the western escarpment in the Northern Cape. It is immediately recognized by its ascending rod-like stems and lateral ascending spreading spur-shoots and sub-umbellate yellow flower heads, the latter flowering during autumn when the plants are leafless. In the past, it was often confused with Othonna arbuscula, a smaller species widespread in the Succulent Karoo Biome.