| Name | Bidens eatoni var. illicita S. F. Blake |
| Authorship | S. F. Blake |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Bidens eatoni Fernald |
| Citation | 1929 Rhodora 31: 100 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Bidens eatoni var. illicita S. F. Blake |
| Identification made in | [no date] (2), 1981 (1), 1983 (1), 2001 (2) |