Linaria vulgaris is known common toadflax. The peloria variety has five spurs. The flowers are pale yellow. The plant grows between two and three feet tall.

Habit and Detached Single Flower of Linaria Vulgaris Peloria

Linaria vulgaris is known common toadflax. The peloria variety has five spurs. The flowers are pale…

"Toad-flax (Linaria vulgaris). Flowers being visited by an insect for nectar. B, longitudinal section, showing the insect's proboscis extended down the spur toward the nectar-gland; C, insect with a mass of pollen (p), rubbed off from anthers onto the dorsal hairs of the thorax, during successive visits." -Gager, 1916

Common Toadflax with Insect

"Toad-flax (Linaria vulgaris). Flowers being visited by an insect for nectar. B, longitudinal section,…

"Sections of flowers of the toad-flax (Linaria vulgaris). A, front view; a, anthers; s, stigma; n, nectar-gland. B, side view; o, ovary." -Gager, 1916

Common Toadflax

"Sections of flowers of the toad-flax (Linaria vulgaris). A, front view; a, anthers; s, stigma; n, nectar-gland.…

"Toad-flax (Linaria vulgaris). Inflorescence, showing normal (spurred) flowers, and several abnormal flowers without spurs." -Gager, 1916

Common Toadflax

"Toad-flax (Linaria vulgaris). Inflorescence, showing normal (spurred) flowers, and several abnormal…

"Toad-flax (Linaria vulgaris). Abnormal flowers (pelories), having five or more spurs. Normal, one-spurred buds are shown in A." -Gager, 1916

Common Toadflax

"Toad-flax (Linaria vulgaris). Abnormal flowers (pelories), having five or more spurs. Normal, one-spurred…