Cybistetes is a genus in the Amaryllidaceae family from Southern Africa with one species. Although it was once considered to be a separate genus, it is generally considered now to be included in Ammocharis.
Cybistetes longifolia is now known as Ammocharis longifolia and information and photos can be seen under that name. This winter growing species was like the summer growing species as it has spreading leaves that have a cutoff appearance when mature like other Ammocharis species but differs in having a specialized fruiting head in which the pedicels elongate, stiffen and spread, and radiate outward, turning it into a tumbling seedhead that drops seeds as the capsules open as it rolls. For more information about this species, see the SANBI reference.