Dactylis glomerata

Basic information
Scientific name	Dactylis glomerata	Click to magnify
Common names	Orchardgrass, Cocksfoot
Higher taxon	Poaceae, Poales, Liliopsida, Magnoliophyta
Natural range	Mediterranean coast to W Asia.
Habitat	Crop field, some kind of farm area, grassland, urban area, vacancy, waterfront.

Invasion information
Range in Japan	Hokkaido, Honshu, Shikoku, and Kyushu.
Origin	Unknown.
Date	Imported in 1860s
Route	Deliberate: As pasture grass
Impact	Competition with native plants and some crops. Host of insects and fungi. Pollen is an allergen for hay fever. Native organism(s) affected: Native plants and crop plants.
Regulation in Japan	No action for prevention, mitigation, control, or eradication.
Introduced range in other countries	Africa, Asia, North and Latin America, and Oceania.

Reference	Notes
Osada (1976) Colored Illustrations of Naturalized Plants of Japan. Hoikusha, Tokyo (in Jpn) Satake et al. (1982) Wild Flowers of Japan, Herbaceous Plants [I]. Heibonsha, Tokyo (in Jpn) Shimizu (ed) (2003) Naturalized Plants of Japan. Heibonsha, Tokyo (in Jpn) etc.	100 of the Japan’s Worst Invasive Alien Species