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Linaria canadensis (L.)Chaz.
Canadian Toadflax
Blue Toadflax
Old-field Toadflax
Synonym(s): Nuttallanthus canadensis (L.) D.A. Sutton
Florida native
Canada toadflax is the more common and widespread of the three species of this genus in Florida. It has been found in most Florida counties and ranges throughout much of the United States except for the rocky mountains and is also found in eastern Canada.
The three native North American toadflax species have smaller windborne seeds than the exotic species.
N. canadensis has shorter pedicels and longer spurs than Apalachicola toadflax. Texas toadflax has slightly larger flowers and is only in the northern counties of Florida.
Previously all the toadflax were considered to be in the genus Linaria. Currently the native Western Hemisphere species (3 in North America and one in South America) are placed in the genus Nuttallanthus.
Linaria canadensis is a member of the Plantaginaceae - Plantain family.
Other species of the Linaria genus in the Wild Florida Photo database:
Linaria floridana - APALACHICOLA TOADFLAX
Atlas of Florida Vascular Plants (Institute for Systemic Botany) profile for this species
iNaturalist profile for this species
USDA Plant Profile for this species
Date record last modified: Feb 19, 2025
