Common European perennial having showy yellow and orange flowers; a naturalized weed in North America; SYN. butter-and-eggs, wild snapdragon, devil's flax, Linaria vulgaris.
Any small W Eurasian plant of the genus Linaria of the snapdragon family Scrophulariaceae. Toadflaxes have spurred, two-lipped flowers, commonly purple or yellow, and grow to 20–80 cm/8–32 in tall.