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CCDB → Angiosperms → Amaryllidaceae → Ismene
| Taxon name | Status | Median (n) |
| Hymenocallis amancaes (Ruiz & Pav.) G. Nicholson | Synonym of Ismene amancaes (Ruiz & Pav.) Herb. | 23 |
| Elisena longipetala Lindl. | Synonym of Ismene longipetala (Lindl.) Meerow | 23 |
| Hymenocallis longipetala (Lindl.) J. F. Macbr. | Synonym of Ismene longipetala (Lindl.) Meerow | 23 |
| Hymenocallis calathina (Herb.) G. Nicholson | Synonym of Ismene narcissiflora (Jacq.) M. Roem. | 43 |
| Hymenocallis narcissiflora (Jacq.) J. F. Macbr. | Synonym of Ismene narcissiflora (Jacq.) M. Roem. | 43 |
| Hymenocallis pedunculata (Herb.) J. F. Macbr. | Synonym of Ismene pedunculata Herb. | 52 |
| Hymenocallis vargasii (Velarde) Traub | Synonym of Ismene vargasii (Velarde) Gereau & Meerow | 23 |