| Name | Smilax biumbellata T. Koyama | 
| Authorship | T. Koyama | 
| Rank | Species | 
| Placed in | Smilax Linnaeus | 
| Remarks | [confirmed] [imported from GBIF] | 
| Citation | 1974 Brittonia 26: 133 | 
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Smilax biumbellata T. Koyama | 
| Identification made in | 2024 (4) |