Invasion information |
Range in Japan |
Hookaido, Honshu, Shikoku, Kyushu |
|
Origin |
Unknown. |
Date |
The first record was in 1905. |
Route |
Deliberate: As pasture grass, for some evironmental modification |
Impact |
Competition with native plants and crop plants. Allelopathy. Host of insects and fungi. Allergen for hay fever. Native organism(s) affected: Native plants and crop plants. |
Regulation in Japan |
Regulated introduction in Saga Pref. |
Introduced range in other countries |
Africa, Asia, Oceania, and North and Latin America. |