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Cyperus esculentus

Basic information
Scientific name Cyperus esculentus

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ショクヨウガヤツリ
Common names Yellow nutsedge, Yellow nutsedge, Chufa, Earthalmond
Higher taxon Cyperaceae, Poales, Liliopsida, Magnoliophyta
Natural range Unknown.
Habitat Crop field, some kind of farm area, grassland, rice field, urban area, vacancy.
Invasion information
Range in Japan Honshu (except northern part), Shikoku, and Kyushu Islands. Range in Japan
Origin
Date The first record in Japan was in 1980 at Nasu, Tochigi Pref.
Route Accidental: Hitchhiking on imported hay. Spreading from farm to farm by hitchhiking on tractors.
Impact Competition. Allelopathy. Host for insects, fungi, and nematodes.
Affected organism: Native and crop plants, including corn and rice
Regulation in Japan No action for prevention, mitigation, control, or eradication.
Introduced range in other countries Temperate to tropical region in Europe, Africa, Asia, Oceania, North and Latin America.
Reference Notes
  • Ecol Soc Jpn (ed) (2002) Handbook of Alien Species in Japan. Chijinshokan, Tokyo (in Jpn)
  • Shimizu (ed) (2003) Naturalized Plants of Japan. Heibonsha, Tokyo (in Jpn)
  • etc.