| Invasion information | ||
| Range in Japan | Tokyo, Saitama, Kanagawa, Shizuoka, Aichi, Mie, Toyama, kyoto, Osaka, Wakayama, Hyogo, Shimane, Yamaguchi, Tokushima, Saga, Kumamoto, and Kagawa Prefs. |
|
| Origin | Unknown. | |
| Date | Begining of Showa Era (1920s) | |
| Route | Deliberate: For horticulture. | |
| Impact | Competition with native species. Native organism(s) affected: Native herbs. | |
| Regulation in Japan | Release of this species in Aichi Prefecture is controled by a prefectural ordinance. | |
| Introduced range in other countries | Asia, New Zealand, etc. | |
| Reference | Notes |
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