Which goes by the common name of Plumbago: Dillenia or Ceratostigma?
Dillenia: Dillenia is a genus of about 100 species of flowering plants in the family Dilleniaceae, native to tropical and subtropical regions of southern Asia, Australasia, and the Indian Ocean islands. Ceratostigma: Ceratostigma ( ; ), or leadwort, plumbago, is a genus of eight species of flowering plants in the family Plumbaginaceae, native to warm temperate to tropical regions of Africa and Asia. Ceratostigma:  Common names are shared with the genus "Plumbago".
Ceratostigma