Hi We saw this yellow and white flower on a ridge above the Smokey River (near junction with Peace River) in Northern Alberta. What is it?
Agree with Common Toadflax Linaria vulgaris. Native to Europe, widely naturalised in North America. http://ip30.eti.uva.nl/BIS/flora.php?selected=beschrijving&menuentry=soorten&id=3612
The outer petals of the flower were pure white not a pale shade of yellow. Is this a known variant of this species?