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Conium maculatum

Basic information
Scientific name Conium maculatum

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Common names Poison hemlock, Hemlock
Higher taxon Apiaceae, Apiales, Magnoliopsida, Magnoliophyta
Natural range Europe.
Habitat Farm area, pasture, roadside, vacancy, etc.
Invasion information
Range in Japan Hokkaido and some parts of Honshu. Range in Japan
Origin Unknown.
Date The first record was in 1959, at Mie Pref.
Route Deliberate: For medicine
Accidental: With imported crop.
Impact Competition with native plants, crops, pasture, etc. Toxic. Parasites (insects, fungi)
Affected organism: Native grasses, crops, etc.
Regulation in Japan No action for prevention, mitigation, control, or eradication.
Introduced range in other countries North and South America, Oceania, Africa, Asia
Reference Notes
  • DECO (ed) (2006) Dictionary of Alien Species. Tokyo-Shoseki, Tokyo (in Jpn)
  • Hotta et al. (1989) Useful Plants of the World. Heibonsha, Tokyo (in Jpn)
  • JWRC (ed) (2008) A Photographic Guide to the Invasive Alien Species in Japan. Heibonsha, Tokyo (in Jpn)
  • Ministry of the Environment, Japan. The Invasive Alien Species Act (Accessed on 2011-1-24) (in Jpn)
  • Shimizu (ed) (2003) Naturalized Plants of Japan. Heibonsha, Tokyo (in Jpn)
  • etc.