CCDB → Angiosperms → Arecaceae → Hydriastele
| Taxon name | Status | Median (n) |
| Gulubia costata (Becc.) Becc. | Synonym of Hydriastele costata F. M. Bailey | 16 |
| Gulubia hombronii Becc. | Synonym of Hydriastele hombronii (Becc.) W. J. Baker & Loo | 16 |
| Gulubia macrospadix (Burret) H. E. Moore | Synonym of Hydriastele macrospadix (Burret) W. J. Baker & Loo | 16 |