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  3. Chamaesyce maculata

Chamaesyce maculata

Basic information
Scientific name Chamaesyce maculata

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コニシキソウ
Common names Milk purslane, Prostrate spurge
Higher taxon Euphorbiaceae, Malpighiales, Magnoliopsida, Magnoliophyta
Natural range North America.
Habitat Farm area, lawn, grass land, vacancy, riverside, etc.
Invasion information
Range in Japan Almost entire Japan Range in Japan
Origin Unknown.
Date The first record was in 1895.
Route Accidental: Details unknown.
Impact Competition against native species, crops, lawn grass. Parasite (insect, fungi).
Affected organism: Native grasses (e.g., Chamaesyce humifusa), crops, lawn grass, etc.
Regulation in Japan No action for prevention, mitigation, control, or eradication.
Introduced range in other countries East Asia, New Zealand.
Reference Notes
  • Osada (1976) Colored Illustrations of Naturalized Plants of Japan. Hoikusha, Osaka.
  • 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.