Chenopodium pumilio

Basic information
Scientific name	Chenopodium pumilio	Click to magnify
Major synonym	Chenopodium carinatum
Common names	Tasmanian goosefoot, Green crumbweed
Higher taxon	Chenopodiaceae, Caryophyllales, Magnoliopsida, Magnoliophyta
Natural range	Australia
Habitat	Farm area, vacancy, etc.

Invasion information
Range in Japan	Almost entire Japan
Origin	Unknown.
Date	Recorded in Honshu Is. since 1933. The first record in Hokkaido was in 1978.
Route	Accidental introduction (with some vector).
Impact	Competition with native plants and crops. Having specific smell. Toxic to domestic animals. Nematode parasite (Globodera rostochiensis) Native organism(s) affected: Native plants, crops, domestic animals, etc.
Regulation in Japan	Import of genus Chenopodium to Japan from the following regions is prohibited by the Plant Protection Act (Potential host of a nematode Globodera rostochiensis): Almost C Asia, Europe, and C Amrica, India, Israel, Azarbaijan, Armenia, Georgia, Argeria, Australia, N Ameirca, Argentine, Peru, and Bolivia
Introduced range in other countries	Africa, S America, Pacific Islands, etc.

Reference	Notes
Osada (1976) Colored Illustrations of Naturalized Plants of Japan. Hoikusha, Osaka (in Jpn) Satake et al. (1982) Wild Flowers of Japan, Herbaceous Plants [II]. Heibonsha, Tokyo (in Jpn) The Plant Protection Act. http://www.pps.go.jp/law_active/Notification/basis/4/12/html/12.html (in Jpn) etc.