Toothwort, Dentaria laciniata

Ubiquitous in eastern mesic forests, Toothwort is one of the most common spring ephemerals. The 4-petaled flowers are usually white, but occasionally pink, as shown. The degree of toothing on the leaves is highly variable. This plant is now being called Cardamine concatenata, with "concatenata" meaning "joined together/ forming a chain," probably from the rhizomes with numerous constrictions.