Toadflaxes West of the Cascade Mountains of Oregon and Washington

The Genus Nuttallanthus

Blue Toadflax, Texas Toadflax, Old Field Toadflax: Nuttallanthus canadensis (Synonyms: Linaria canadensis, Linaria canadensis var. canadensis) -

Blue Toadflax, Large-flowered Blue Toadflax, Texas Toadflax: Nuttallanthus texanus (Synonyms: Linaria canadensis var. canadensis, Linaria canadensis var. texana, Linaria texana) -