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  3. Wolffia globosa

Wolffia globosa

Basic information
Scientific name Wolffia globosa (No picture)
Common names Rootless duckweed
Higher taxon Araceae, Alismatales, Liliopsida, Magnoliophyta
Natural range S Europe.
Habitat Lake or pond, rice field.
Invasion information
Range in Japan Kanto and Hokuriku District to western Japan Range in Japan
Date Late 19C or early 20C
Route Accidental: with unknown vector
Impact Competition with native plants and rice. Host for insects and fungi.
Affected organism: Native aquatic plants, rice, etc.
Regulation in Japan No action for prevention, mitigation, control, or eradication.
Introduced range in other countries C-S Europe, Africa, Tropical Asia, Oceania, South and Latin America
Reference Notes
  • Osada (1976) Colored Illustrations of Naturalized Plants of Japan. Hoikusha, Tokyo (in Jpn)
  • Satake et al. (1982) Wild Flowers of Japan, Herbaceous Plants [II]. Heibonsha, Tokyo (in Jpn)
  • Shimizu (ed) (2003) Naturalized Plants of Japan. Heibonsha, Tokyo (in Jpn)
  • etc.