Celandine Poppy and Celandine

These two plants are sometimes confused by plant enthusiasts. Both flower at the same time and their deeply dissected leaves are similar. However, Stylophorum diphyllum is a native in rich woods with minimal disturbance, while Chelidonium majus is introduced and tends to appear along the edges of woods, especially degraded woods. The flowers and fruits of Chelidonium look like those of a mustard, but both plants are members of the Papaveraceae (Poppy Family).

Stylophorum diphyllum, Celandine Poppy (or Wood Poppy)

Chelidonium majus, Celandine