Tripleurospermum maritimum subsp. inodorum

Basic information
Scientific name	Tripleurospermum maritimum subsp. inodorum	Click to magnify
Major synonym	Matricaria inodora
Common names	Scentless chamomile
Higher taxon	Asteraceae, Asterales, Magnoliopsida, Magnoliophyta
Natural range	Europe.
Habitat	Crop field, grassland.

Invasion information
Range in Japan	Hokkaido, Aomori, Akita, Kanagawa, Shizuoka, Mie, Hyogo, Okayama, Tokushima, Saga, and Oita Prefs.
Origin	Unknown.
Date	Middle Meiji Era (late 19 C)
Route	Unknown.
Impact	Competition, hybridization with native species. Native organism(s) affected: Native herbs.
Regulation in Japan	No action for prevention, mitigation, control, or eradication.
Introduced range in other countries	Australia, North America.

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