| Name | Sagittaria australis Small |
| Authorship | Small |
| Rank | Species |
| Placed in | Sagittaria Linnaeus |
| Citation | 22 Jul 1903 Fl. S.E. U.S. [Small] 45, 1326 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sagittaria australis Small |
| Identification made in | 1983 (1) |