White Anemone (Meadow Anemone; Windflower)
Leafy perennial with showy white flowers, often occurring in large colonies. Flowers single, to 1¾ inches wide, on long stems from upper leaf axils, typical anemone type, with 5 sepals acting as petals; white, with many yellow stamens. Blooms May–July. Basal leaves on long stems, 3-divided, with further incisions and coarse teeth. Stem leaves similar but sessile (stalkless). New plants arise from spreading underground rhizomes.