Dalmatian toadflax has large, yellow, snapdragon-like flowers with long spurs. The stem and leaves have a waxy, bluish-green hue.
Dalmatian toadflax is not native to the US. It was introduced from Europe in the early 1800's and is considered invasive in many states. It generally flowers between May and September. The fruits are capsules that each contain numerous small, black seeds.