| Name | Diplazium costulisorum (Copeland) Copeland |
| Authorship | (Copeland) Copeland |
| Rank | Species |
| Placed in | Diplazium Swartz |
| Citation | 1913 Index Filic., Suppl. 1906-1912 26 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Diplazium costulisorum (Copeland) Copeland |
| Identification made in | [no date] (1), 1989 (1) |