This genus has 37 species that are distinguished by their cylindrical to semi-cylindrical foliage. It comes from sandy coastal areas of the South African regions, where, in optimal climatic conditions, due to its particular ground cover growth, it creates very beautiful outdoor floor coverings. It produces daisy-like flowers with many petals, brightly colored in shades of yellow, pink and white, which tend to open up in the hottest hours of the day.