Pink corydalis, also known as rock harlequin or pale corydalis, is a biennial herbaceous plant that grows 1 to 2.5 feet tall. In its first year, it forms a basal rosette of soft, lacy foliage. In its second year, it sends up slender, branching stems adorned with delicate, tubular flowers, pink with yellow tips, that dangle along the stems and cluster at their tips. The plant blooms throughout the summer, from May to September, adding soft color to dry woods, rocky ledges, cliffs, and areas often disturbed by fire or human activity. 

The leaves are fern-like, blue-green, and waxy, with deep lobes. They are compound, typically divided into groups of 3 to 5 finely cut leaflets. Bees and butterflies are drawn to the nectar of its distinctive pink and yellow flowers, while rabbits may occasionally browse its foliage.

This plant is typically found in the New England states, the Great Lakes region, and south along the Blue Ridge Mountains into northwestern Georgia. It is abundant throughout Canada and also occurs in parts of Alaska.

The Iroquois used a decoction of pink corydalis as a topical remedy for hemorrhoids.