Invasion information | ||
Range in Japan | Almost entire Japan | |
Origin | Unknown. | |
Date | Middle 19 C | |
Route | Accidental: Details unknown. | |
Impact | Potentially: Competition with native plants, crops, lawn grasses. Parasite (insects, fungi, nematodes). Allergen of hay fever. Native organism(s) affected: Native grasses, crops, lawn grass, etc. | |
Regulation in Japan | No action for prevention, mitigation, control, or eradication. | |
Introduced range in other countries | Worldwide. |
Reference | Notes |
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