| Name | Cayratia japonica var. ferruginea W. T. Wang |
| Authorship | W. T. Wang |
| Rank | Variety |
| Placed in | Cayratia japonica (Thunberg) Gagnepain |
| Citation | 1979 Acta Phytotax. Sin. 17(3): 81 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Cayratia japonica var. ferruginea W. T. Wang |
| Identification made in | 2023 (1) |