| Name | Ludwigia sphaerocarpa var. macrocarpa Fernald & Griscom |
| Authorship | Fernald & Griscom |
| Rank | Variety |
| Placed in | Ludwigia sphaerocarpa Elliott |
| GUID | urn:lsid:ipni.org:names:144433-2 |
| Citation | 1935 Rhodora 37: 174 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Ludwigia sphaerocarpa var. macrocarpa Fernald & Griscom |
| Identification made in | [no date] (1), 1982 (1) |