Yellow toadflax (Linaria vulgaris L.)

Yellow Toadflax was introduced as an ornamental plant, and is a noxious weed in Wyoming.  It is known as ‘snapdragon’ or ‘butter and eggs’ because of it’s distinct bright white and yellow flowers with two ‘lips’ and long spurs. It can be differentiated from Dalmatian Toadflax by the numerous long, narrow, thin leaves that appear even in the rosette stage.