| Name | Monvillea insularis (Hemsley) Britton & Rose |
| Authorship | (Hemsley) Britton & Rose |
| Rank | Species |
| Placed in | Monvillea |
| Citation | 1920. (9 Sep 1920) Cactaceae (Britton & Rose) 2: 23, f. 21 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Monvillea insularis (Hemsley) Britton & Rose |
| Identification made in | [no date] (1) |