| Name | Crassula undulata Haworth |
| Authorship | Haworth |
| Rank | Species |
| Placed in | Crassula Linnaeus |
| Citation | 1803 Misc. Nat. 176 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Crassula undulata Haworth |
| Identification made in | [no date] (2) |