Invasion information | ||
Range in Japan | Almost entire Japan. Northern most distribution is Hakodate, southern Hokkaido. | |
Origin | Continental China | |
Date | 1728 or 1736 | |
Route | Deliberate: For horticulture, and as food and timber. | |
Impact | Competition with native and crop plants. Because sexual reproduction of this species is very rare, there may be small risk of hybridization with native congeners. Native organism(s) affected: Native and crop plants. | |
Regulation in Japan | Introduction to the wild is regulated in Aichi Pref. | |
Introduced range in other countries | Unknown. |
Reference | Notes |
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Although this species had commonly been used for food and timber in past, the use is currently small, because of import of cheep products from China. |