Invasion information | ||
Range in Japan | Almost entire Japan | |
Origin | Unknown. | |
Date | Introduced in ca. 1900. Spread within Japan since 1940s. | |
Route | Deliberate: As ornamental plant. Accidental: With railway transportation of imported crops, spread within Japan | |
Impact | Competition with native species and crops. Parasite (insects, fungi, viruses, nematodes). Native organism(s) affected: Native grasses and crops. | |
Regulation in Japan | International trade is legally restricted in Japan. | |
Introduced range in other countries | North and South America, Oceania, Asia, Europe, Africa. |
Reference | Notes |
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