| Name | Helianthus debilis subsp. tardiflorus Heiser |
| Authorship | Heiser |
| Rank | Subspecies |
| NomenclaturalStatus | NomLeg |
| Placed in | Helianthus debilis Nuttall |
| GUID | urn:lsid:ipni.org:names:119098-2 |
| Citation | 1956 Madroño 13: 154 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Helianthus debilis subsp. tardiflorus Heiser |
| Identification made in | [no date] (1), 2007 (1) |
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