| Family | Malvaceae |
| Subfamily | Malvoideae |
| Tribe | Hibisceae |
| Scientific name | Hibiscus clayi O. Degener & I. Degener |
| Synonyms | Hibiscus newhousei M. J. Roe |
| Common name | (English common name) Hawaiian red hibiscus, red Kauai rosemallow |
| (Japanese common name) none | |
| Distribution | USA (Hawaii) |
| Reference | Hibiscus clayi O. Deg. & I. Deg. |
| Hibiscus clayi O. Deg. & I. Deg. | |
| Hibiscus clayi |
| September 2009 at Tsukuba Botanical Garden |
September 2009 at Tsukuba Botanical Garden |