Antirrhinum cornutum

Antirrhinum cornutum (syn. "Sairocarpus cornutus") is an uncommon species of New World snapdragon known by the common name spurred snapdragon.
It is endemic to northern California, where it grows in the inland mountains and the northern reaches of the Central Valley. This is an annual herb producing hairy, erect, non-climbing stems. Solitary flowers grow in the leaf axils along the stem. Each hairy-lipped snapdragon flower is purple-veined white and about a centimeter long.