| Name | Hymenocallis arenicola Northrop |
| Authorship | Northrop |
| Rank | Species |
| Placed in | Hymenocallis Salisbury |
| Citation | 1902. (10 Dec 1902) Mem. Torrey Bot. Club 12(1): 28–29, t. 2 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Hymenocallis arenicola Northrop |
| Identification made in | [no date] (1), 2006 (4) |