This includes for example Cordyline and Dracaena , which are sometimes separated off into a separate family , Dracaenaceae . Recent research has tended to incorporate these into a larger family Ruscaceae , though . Some genera ( e.g. Cordyline and Dracaena ) are sometimes separated off into a separate family , Dracaenaceae , though recent research has tended to incorporate these into a larger family Ruscaceae .