| Name | Pachycereus marginatus (de Candolle) Britton & Rose |
| Authorship | (de Candolle) Britton & Rose |
| Rank | Species |
| Placed in | Pachycereus |
| Citation | 1909 (21 Jul 1909) Contr. U.S. Natl. Herb. 12(10): 421-422 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Pachycereus marginatus (de Candolle) Britton & Rose |
| Identification made in | [no date] (4) |