| 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) |