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CCDB → Angiosperms → Arecaceae → Washingtonia
| Taxon name | Status | Median (n) |
| Washingtonia filifera (Linden) H. Wendl. ex de Bary | Accepted | 18 |
| Washingtonia robusta H. Wendl. | Accepted | 18 |
| Pritchardia filifera Linden ex André | Synonym of Washingtonia filifera (Linden) H. Wendl. ex de Bary | 18 |
| Pritchardia filifera Linden ex André | Synonym of Washingtonia filifera (Linden) H. Wendl. ex de Bary | 18 |
| Washingtonia filifera (Lind.) Wendl. | Synonym of Washingtonia filifera (Linden) H. Wendl. ex de Bary | 18 |
| Washingtonia robusta Wendl. | Synonym of Washingtonia robusta H. Wendl. | 18 |
| Washingtonia sonorae S. Watson | Synonym of Washingtonia robusta H. Wendl. | 18 |