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Poa pratensis

Basic information
Scientific name Poa pratensis

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ナガハグサ
Common names Kentucky bluegrass, Smooth meadowgrass
Higher taxon Poaceae, Poales, Liliopsida, Magnoliophyta
Natural range Europe.
Habitat Road side, vacancy, pasture field, river side, etc.
Invasion information
Range in Japan Lowland in almost entire Japan Range in Japan
Origin
Date Introduced around 1870.
Route Deliberate: As a pasture plant.
Impact Hybridization with native plants. Competition with native, crop, and pasture plants. Host for insects and fungi. Allergen for hay fever.
Affected organism: Native close montane populations (hybridization). Native and crop plants (competition).
Regulation in Japan No action for prevention, mitigation, control, or eradication.
Introduced range in other countries Africa, Oceania, North and Latin America.
Reference Notes
  • Shimizu (ed) (2003) Naturalized Plants of Japan. Heibonsha, Tokyo (in Jpn)
  • etc.