Sorghum halepense

Basic information
Scientific name	Sorghum halepense	Click to magnify
Common names	Johnsongrass
Higher taxon	Poaceae, Poales, Liliopsida, Magnoliophyta
Natural range	Mediterranean coastal Europe.
Habitat	Crop field, urban area, riverside, etc.

Invasion information
Range in Japan	Honshu, Shikoku, and Kyushu Islands.
Origin	Unknown.
Date	Spread since 1945.
Route	Accidental: Details unknown
Impact	Competition with native and crop plants. Hybridization with congeneric crop plants (sorghum). Native organism(s) affected: Native and crop plants.
Regulation in Japan	No action for prevention, mitigation, control, or eradication.
Introduced range in other countries	Temperate to tropical region in the world.

Reference	Notes
Osada (1976) Colored Illustrations of Naturalized Plants of Japan. Hoikusha, Tokyo (in Jpn) etc.