Coronopus didymus

Basic information
Scientific name	Coronopus didymus	Click to magnify
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.
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) Native organism(s) affected: 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.