It is a word from the Afrikaans language meaning red shrub. It is the endemic name in South Africa of red tea, Pu-erh tea. Its scientific name is Aspalathus linearis and belongs to the family Fabaceae.
Rooibos : Plant originating in South Africa, with whose leaves you get an infusion of orange-red called "red tea", sweet flavor and without theine that is taken alone or with milk,