Antirrhinum spurium Kickxia spuria is a species of flowering plant in the family Plantaginaceae known by several common names, including roundleaf cancerwort[1] and round-leaved fluellen.

[2] It is native to Europe and Asia, but it is present on other continents as an introduced species, and sometimes a noxious weed.

It produces rounded, fuzzy leaves at wide intervals along the stem, and solitary snapdragon-like flowers.

Each flower is up to 1.5 centimeters long with a narrow, pointed spur extending from the back.

The lobes of the mouth are yellow, white, and deep purple, and the whole flower is fuzzy to hairy.