Photos and information adapted from "Weeds of the West" by Tom Whitson
Linaria genistifolia ssp. dalmatica (L.)
Dalmation toadflax is a perennial, up to 3 ft tall reproducing by seed and root stalks.  Leaves are dense, alternate, entire, upper leaves are broad based.  Flowers are borne in axils of upper leaves and are 2-lipped, 3/4 to 1.5" long with a long spur, yellow with an orange, bearded throat. Fruit is a 2-celled capsule with many irregularly angled seeds.

Dalmation Toadflax is an  aggressive, escaped ornamental.  A deep root and waxy leafy makes control very difficult.