| Name | Cleistocactus icosagonus (Kunth) F. A. C. Weber |
| Authorship | (Kunth) F. A. C. Weber |
| Rank | Species |
| Placed in | Cleistocactus Lemaire |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Cleistocactus icosagonus (Kunth) F. A. C. Weber |
| Identification made in | [no date] (3) |