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Coronopus didymus

Basic information
Scientific name Coronopus didymus

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カラクサナズナ
Common names Swinecress, Lesser swinecress, Bittercress, Swine wartcress
Higher taxon Brassicaceae, Capparales, Magnoliopsida, Magnoliophyta
Natural range Europe.
Habitat Farm area, pasture field, roadside, vacancy, etc.
Invasion information
Range in Japan Wide area with warm climate. Range in Japan
Origin Unknown.
Date The first record was in 1899 at Ogasawara (Bonin) Islands. Recorded in 1912 at Tokyo.
Route Accidental: Details unknown.
Impact Competition with native species and crops. Parasite (fungi)
Affected organism: Native plants, crops, etc.
Regulation in Japan No action for prevention, mitigation, control, or eradication.
Introduced range in other countries Africa, Asia, Oceania, North and South America.
Reference Notes
  • Jpn Assoc Advanc Phyto-Regul & Inst Contr Agrochem, Minist Agr, China (2000) Chinese Colored Weed Illustrated Book. Zenkoku-Noson-Kyoiku-Kyokai, Tokyo (in Chn and Eng)
  • Osada (1976) Colored Illustrations of Naturalized Plants of Japan. Hoikusha, Osaka (in Jpn)
  • etc.