| Name | Heterotheca sessiliflora subsp. echioides (Bentham) Semple |
| Authorship | (Bentham) Semple |
| Rank | Subspecies |
| Placed in | Heterotheca sessiliflora (Nuttall) Shinners |
| Citation | 1993 Phytologia 73(6): 450 |
| Holdings | 47 Specimens held in the Harvard University Herbaria identified as Heterotheca sessiliflora subsp. echioides (Bentham) Semple |
| Identification made in | [no date] (47) |
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