– Canada toadflax, old field toadflax
Distribution: Occurring west of the Cascades crest in Washington. Occurring in scattered locations in Washington; widely distributed in eastern half of North America.
Habitat: Disturbed areas including roadsides, wastelots, and fields.
– blue toadflax, Texas toadflax
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California, east to Sasketchewan and across much of the U.S. except the upper Midwest and Northeast.
Habitat: Prairies, grasslands, and balds.