| Name | Horkelia fusca subsp. capitata (Lindley) D. D. Keck |
| Authorship | (Lindley) D. D. Keck |
| Rank | Subspecies |
| Placed in | Horkelia fusca Lindley |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Horkelia fusca subsp. capitata (Lindley) D. D. Keck |
| Identification made in | [no date] (7), 1938 (1) |