| Family | Solanaceae |
| Scientific name | Solanum spirale Roxburgh |
| Synonyms | Solanum apoense Elmer; Solanum callium C. T. White ex R. J. F. Henderson; Solanum spirale Roxburgh var. tetrasepalum H. Chu; Solanum superficiens Adelbert |
| Common name | (Japanese common name) kidachi-inu-houdzuki [tree inu-houdzuki (inu-houdzuki = Solanum nigrum L.)] |
| (English common name) none | |
| Distribution | (Japan) Okinawa |
| (Other nations) [native] China, Vietnam, Laos, Thailand, Indonesia, Australia, Myanmar, Bangladesh, Bhutan, India | |
| Chromosomal number | 2n=48 |
| Description | Plants 0.5-3m tall. Leaves 5-7cm long. Flowers white corollas 8-10mm, flowering in May to July. Fruits yellow ca. 1.1-1.6cm. Evergreen. Shrub. |
| Reference | Solanum spirale Roxb. |
| Solanum spirale Roxburgh | |
| Solanum spirale Roxb. | |
| Agent for hair growth (European Patent EP1915997/2008) | |
| Note | Naturalized plants (introduced as a garden plant). |
| July 2008 at Ishigaki Island |
July 2008 at Ishigaki Island |
July 2008 at Ishigaki Island |
| July 2008 at Ishigaki Island |