| Name | Helianthus giganteus var. oppositifolius Farwell |
| Authorship | Farwell |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Helianthus giganteus Linnaeus |
| GUID | urn:lsid:ipni.org:names:119132-2 |
| Citation | 1917 Amer. Midl. Naturalist 17: 180 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Helianthus giganteus var. oppositifolius Farwell |
| Identification made in | [no date] (1) |
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