There are no custom databases for Cordyline fruticosa or Codiaeum variagatum. The system will sort any plant by genus, so you can see all of the plants in Cordyline (or Codiaeum) lumped together, but that's about it.
As to why those two genera don't have custom databases, the answer is quite simple, no one has bothered to create one. All of the custom databases were created at the behest members who cared enough about particular types of plants to put custom databases together.
