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Family: scrophulariaceae
Common name(s): Blue Toadflax
Synonym(s): Linaria canadensis
Hardiness ratings: USDA zone 4 - 8~10 
General resources
Links for Nuttallanthus canadensis
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 4-8a)
 (2 photos)
- Garden.org - Community-assembled plant profile (22 photos)
- Illinois Wildflowers - Informative illustrated page with description and cultivation details, also covering range and faunal associations.
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (4 photos)
- Las Pilitas Nursery - Catalog page about this California native, with description and horticultural basics. (zone 4-10) (1 photo)
- Missouri Plants - Description and photographs of botanical features, with notes about habitat and native status. (9 photos)
- North Carolina State University factsheet - Plant profile with horticultural details and comments (4 photos)
- Turner Photographics - Profile of wildflower of the US Pacific Northwest, with botanical description, habitat and distribution, and photo gallery.
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