These are bloodroot flowers. The leaf of the bloodroot is wrapped around the flower bud as it emerges from the ground in early spring. The leaf doesn't fully expand until after the flower has bloomed. Bloodroot flower petals are shed with in a day or two of pollination so the flower display is short lived. Bloodroot flowers can be found growing in Eastern North America. The flowers are produced from March to May, with 8-12 delicate white petals and yellow reproductive parts.