| Name | Heterotheca villosa var. ballardii (Rydberg) Semple |
| Authorship | (Rydberg) Semple |
| Rank | Variety |
| Placed in | Heterotheca villosa (Pursh) Shinners |
| Citation | 1994 Novon 4(1): 53 |
| Holdings | 20 Specimens held in the Harvard University Herbaria identified as Heterotheca villosa var. ballardii (Rydberg) Semple |
| Identification made in | [no date] (17), 1993 (3) |
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