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CCDB → Angiosperms → Rubiaceae → Kadua
| Taxon name | Status | Median (n) |
| Kadua centranthoides Hook. & Arn. | Accepted | 50 |
| Hedyotis terminalis (Hook. & Arn.) W. L. Wagner & D. R. Herbst | Synonym of Kadua affinis Cham. & Schltdl. | 50 |
| Gouldia axillaris Wawra | Synonym of Kadua axillaris (Wawra) W. L. Wagner & Lorence | 36 |
| Hedyotis centranthoides (Hook. & Arn.) Steud. | Synonym of Kadua centranthoides Hook. & Arn. | 50 |
| Hedyotis schlechtendahliana subsp. remyi (Hillebr.) Fosberg | Synonym of Kadua cordata subsp. remyi (Hillebr.) W. L. Wagner & Lorence | 47 |
| Hedyotis elatior (H. Mann) Fosberg | Synonym of Kadua elatior (H. Mann) A. Heller | None |
| Hedyotis littoralis (Hillebr.) Fosberg | Synonym of Kadua littoralis Hillebr. | 50 |