| Name | Sparganium erectum subsp. stoloniferum (Buchanan-Hamilton ex Graebner) H. Hara |
| Authorship | (Buchanan-Hamilton ex Graebner) H. Hara |
| Rank | Subspecies |
| Placed in | Sparganium erectum Linnaeus |
| Citation | 1976 J. Jap. Bot. 51(8): 228 |
| Holdings | 12 Specimens held in the Harvard University Herbaria identified as Sparganium erectum subsp. stoloniferum (Buchanan-Hamilton ex Graebner) H. Hara |
| Identification made in | [no date] (12) |