A new species of Crassula L., C. sandrae N.H.G. Jacobsen, a succulent from the Western Cape Province of South Africa, is described. It is intermediate in floral morphology and habit between C. tetragona L. and C. biplanata Haw. of the Section Acutifolia (Schönland) Toelken, differing from both, but is most similar in habit and inflorescence to C. biplanata.