| Name(s) matched | Match Type | Click on matched species name to show databases matched |
| Alstonia congensis Engl. | direct | Alstonia congensis Engl. WFO Accepted |
| Alstonia congensis | direct | Alstonia congensis Engl. WFO Accepted |
| Alstonia gilletii | direct | Alstonia congensis Engl. WFO Accepted |
| Emien (Alstonia congensis) | direct | Alstonia congensis Engl. WFO Accepted |