Anemone lancifolia is an herbaceous

Herbaceous

A herbaceous plant is a plant that has leaves and stems that die down at the end of the growing season to the soil level. They have no persistent woody stem above ground...

 plant species in the genus Anemone

Anemone

Anemone , is a genus of about 120 species of flowering plants in the buttercup family Ranunculaceae in the north and south temperate zones...

and family Ranunculaceae

Ranunculaceae

Ranunculaceae are a family of about 1700 species of flowering plants in about 60 genera, distributed worldwide....

. Plants grow 20 to 30 cm tall, growing from a horizontally orientated rhizome, flowering mid spring to early summer. The flowers have white sepals that are 12-20 mm long. This species much resembles Anemone quinquefolia

Anemone quinquefolia

Anemone quinquefolia is an early-spring flowering plant in the genus Anemone, native to North America. It is commonly called Wood Anemone, like Anemone nemorosa, a closely related European species...

except that it is larger growing. After flowering fruits called achenes are formed in a small cluster, each achene is 3.5-5 mm long, lacks wings and has a straight or partly curved beak that is 1-1.5 mm long.

Native from the Eastern USA in the states of North and South Carolina, Virginia and West Virginia.
Anemone lancifolia is normally found growing in rich damp soils in woods.