| Name | Heterostemma grandiflorum Costantin |
| Authorship | Costantin |
| Rank | Species |
| Placed in | Heterostemma |
| Citation | 1912 Fl. Indo-Chine [P.H. Lecomte et al.] 4: 122 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Heterostemma grandiflorum Costantin |
| Identification made in | [no date] (2) |