National Institute for Environmental Studies Invasive Species of Japan Japanese | English
  1. Invasive Species of Japan >
  2. Vascular plants >
  3. Myosotis scorpioides

Myosotis scorpioides

Basic information
Scientific name Myosotis scorpioides

Click to magnify

Common names True forget-me-not
Higher taxon Boraginaceae, Lamiales, Magnoliopsida, Magnoliophyta
Natural range Europe.
Habitat Moist area.
Invasion information
Range in Japan Hokkaido, Tohoku, Kanto, Koshinetsu, Hokuriku, and Shikoku Districts, Shizuoka, and Gifu Prefs. Range in Japan
Origin Unknown.
Date Since 1950s, naturalized in Hokkaido and Nagano Pref.
Route Deliberate: As ornamental plant.
Impact Competition with native plant. Hybridization with a native congener.
Affected organism: Native hygrophyte (competition). Native congener Myosotis sylvatica (hybridization).
Regulation in Japan No action for prevention, mitigation, control, or eradication.
Introduced range in other countries Cultivated as ornamental plant worldwide.
Reference Notes
  • Osada (1976) Colored Illustrations of Naturalized Plants of Japan. Hoikusha, Tokyo (in Jpn)
  • Shimizu (ed) (2003) Naturalized Plants of Japan. Heibonsha, Tokyo (in Jpn)
  • etc.