| Invasion information | ||
| Range in Japan | Hokkaido, Honshu, Shikoku Is and Kyushu (excluding Saga and Kumamoto Pref). |
|
| Origin | Unknown. | |
| Date | 1912 | |
| Route | Deliberate: As a horticultural plant (for rock gardens) | |
| Impact | Unknown. | |
| Regulation in Japan | Under Construction. | |
| Introduced range in other countries | Australia, New Zealand, North, Central and South America, Hawaii | |
| Reference | Notes |
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