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Of the Figwort family (Scrophulariaceae), the toad-flax (Linaria vulgaris).

Toad Flax

Of the Figwort family (Scrophulariaceae), the toad-flax (Linaria vulgaris).

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…

Pictured are various forms of nectaries. Left, the nectar spurs of <i>linaria vulgaris</i>; the cushion-like nectaries in a grape flower; nectaries of columbine; right, the nectar scales on petals of ranunculus.

Nectaries

Pictured are various forms of nectaries. Left, the nectar spurs of linaria vulgaris; the cushion-like…

"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…