Ceropegia is a genus of plants within the family Apocynaceae, native to Africa, southern Asia, and Australia. It was named by Carl Linnaeus, who first described this genus in his Genera plantarum, which appeared in 1737.
 
Care:
Grow string of hearts in bright indirect light, out of direct sunshine. Water regularly in spring and summer, allowing the soil to completely dry out between waterings. Reduce watering in winter, and never let the plant sit in water as the roots can rot and kill the plant. Fertilise with house plant fertiliser once or twice a year, during the growing season.