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  3. Sonchus asper

Sonchus asper

Basic information
Scientific name Sonchus asper

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オニノゲシ
Common names Spiny sowthistle, Laiteron rude, Rough sowthistle, Prickly Sowthistle
Higher taxon Asteraceae, Asterales, Magnoliopsida, Magnoliophyta
Natural range Europe.
Habitat Farm area, fruit garden, pasture field, lawn field, roadside, vacancy, etc.
Invasion information
Range in Japan Almost entire Japan Range in Japan
Origin Unknown.
Date The first record in Japan was in 1892, at Tokyo.
Route Accidental: Details unknown.
Impact Competition with native species. Parasite (insects, fungi, viruses)
Affected organism: Native grasses.
Regulation in Japan No action for prevention, mitigation, control, or eradication.
Introduced range in other countries Worldwide. North and South America, Africa, Asia, Oceania.
Reference Notes
  • Jpn Assoc Advanc Phyto-Regul & Inst Contr Agrochem, Minist Agr, China (2000) Chinese Colored Weed Illustrated Book. Zenkoku-Noson-Kyoiku-Kyokai, Tokyo
  • Osada (1976) Colored Illustrations of Naturalized Plants of Japan. Hoikusha, Osaka (in Jpn)
  • Satake et al. (1981) Wild Flowers of Japan, Herbaceous Plants [III]. Heibonsha, Tokyo (in Jpn)
  • Shimizu (ed) (2003) Naturalized Plants of Japan. Heibonsha, Tokyo (in Jpn)
  • etc.