Abstract
Thus far, six species of Delosperma (Aizoaceae subfam. Ruschioideae) have been recorded from the Gauteng province in north-central South Africa, an essentially summer-rainfall region. Of these, two are purple-flowered, one is purple-white-flowered, while the other species are white- or yellow-flowered. We here describe a further purple-white-flowered species from northwestern Gauteng and adjacent North West province as D. buysii. The new species is contrasted with D. macellum, the only other purple-white-flowered species known from Gauteng. Among other differences, D. buysii has a smaller, more compact growth form in comparison to the larger-growing, often trailing D. macellum, while the sepals of D. buysii are equal in length while those of D. macellum are of two lengths.