| Name | Niphidium longifolium (Cavanilles) C. V. Morton & Lellinger |
| Authorship | (Cavanilles) C. V. Morton & Lellinger |
| Rank | Species |
| Placed in | Niphidium |
| Citation | 1971 Amer. Fern J. 61: 39 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Niphidium longifolium (Cavanilles) C. V. Morton & Lellinger |
| Identification made in | 2017 (1) |