The stems are mostly solitary or 4-6 in number, hollow, slightly angular, and sparsely hairy or nearly hairless.
The flowers have a long pedicel, a tubular calyx with three teeth, and a corolla 11-15 mm long, white or pale yellow with a darker purple or reddish-purple helmet.
The basal leaves are early deciduous, while stem leaves are alternate, with long petioles and deeply lobed margins.
It flowers from May to August and fruits from July to September.