| Name | Helianthus diffusus Moench |
| Authorship | Moench |
| Rank | Species |
| Placed in | Helianthus |
| Citation | 1802 Suppl. Meth. [Moench] 259 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Helianthus diffusus Moench |
| Identification made in | [no date] (1) |
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