Invasion information |
Range in Japan |
Hokkaido, Honshu, and Shikoku Islands. |
|
Origin |
Unknown. |
Date |
The first record was in 1910s at Yokohama, Kanagawa Pref. |
Route |
Accidental: Details unknown. |
Impact |
Competition with native plants and crops. Parasite insects and viruses Native organism(s) affected: Native plants (such as Cerastium fontanum subsp. vulgare var. angustifolium), crops, etc. |
Regulation in Japan |
No action for prevention, mitigation, control, or eradication. |
Introduced range in other countries |
Asia, N Africa, Oceania, N and S America. |