| Name | Siphocampylus dubius Zahlbruckner |
| Authorship | Zahlbruckner |
| Rank | Species |
| Placed in | Siphocampylus Pohl |
| Citation | 1897 Bull. Torrey Bot. Club 24: 385 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Siphocampylus dubius Zahlbruckner |
| Identification made in | 1924 (1), 2015 (1) |