What type of category does Acantholimon and Podranea have in common?
Acantholimon: Acantholimon (prickly thrift) is a genus of small flowering plants within the plumbago or leadwort family, Plumbaginaceae. Podranea: Podranea, is a genus of one or two species of African flowering vines in the Bignoniaceae family.
genus