| Name | Monactis subdeltoidea B. L. Robinson |
| Authorship | B. L. Robinson |
| Rank | Species |
| Placed in | Monactis |
| Citation | 1911 Proc. Amer. Acad. Arts 47(2): 208 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Monactis subdeltoidea B. L. Robinson |
| Identification made in | 1911 (1), 2015 (1) |