| Name | Crassula natans Thunberg |
| Authorship | Thunberg |
| Rank | Species |
| Placed in | Crassula Linnaeus |
| Citation | 1794 Prodr. Pl. Cap. 1: 54 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Crassula natans Thunberg |
| Identification made in | [no date] (6) |