Nuttallanthus canadensis

Basic information
Scientific name	Nuttallanthus canadensis	Click to magnify
Major synonym	Linaria canadensis
Common names	Oldfield toadflax, Blue toadflax, Canada toadflax
Higher taxon	Scrophulariaceae, Scrophulariales, Magnoliopsida, Magnoliophyta
Natural range	North America
Habitat	Roadside, urban area, lawn field, etc.

Invasion information
Range in Japan	Kanto, Hokuriku, to central and western Japan.
Origin	Unknown.
Date	1941. The first locality in Japan was Kyoto.
Route	Unknown.
Impact	Under Construction.
Regulation in Japan	Under Construction.
Introduced range in other countries	South America, Australia, etc.

Reference	Notes
Encyclopedia of Life (Accessed on 2011-05-02) http://www.eol.org/ Ogaito, H. (2011, pers. comm., observation on microhabitat in several sites of Hyogo and Mie Pref.) Osada (1976) Colored Illustrations of Naturalized Plants of Japan. Hoikusha, Osaka (in Jpn) etc.