Trailing, often purplish, tufted, hairless plant with slender stems. Leaves alternate, kidney shaped to almost rounded 5 to 9 lobed and long stalked. Flowers lilac to violet, with a yellowish patch on the lower lip, 9 to 15 mm long, solitary on long stalks at the base of the leaves. Spur 1.5 to 3 mm long.

Shady rocks and walls.

May to September.

Perennial.

Fairly frequent throughout most of Britain.

Fairly frequent in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 131 of the 617 tetrads.