| Name | Endoptychum depressum R. Singer & A. H. Smith |
| Authorship | Singer & A. H. Smith |
| Rank | Species |
| Placed in | Endoptychum |
| Citation | 1958 Brittonia 10: 216 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Endoptychum depressum R. Singer & A. H. Smith |
| Identification made in | [no date] (2), 1972 (1) |