| Name | Helianthus rigidus (Cassini) Desfontaines |
| Authorship | (Cassini) Desfontaines |
| Rank | Species |
| Placed in | Helianthus |
| Citation | 1829 Tabl. École Bot., ed. 3 (Cat. Pl. Horti Paris.) 184 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Helianthus rigidus (Cassini) Desfontaines |
| Identification made in | [no date] (2) |
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