| Name | Lupinus chamissonis var. longifolius S. Watson |
| Authorship | S. Watson |
| Rank | Variety |
| Placed in | Lupinus chamissonis Eschscholtz |
| Citation | 1876 Bot. California 1: 117 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Lupinus chamissonis var. longifolius S. Watson |
| Identification made in | [no date] (1), 2024 (1) |