No nectar, but pollen, white flowers
Perennial from a short, thick rhizome with orange red juice, leaves, and flowers coming directly from rhizome…Flowers about May 1 The petals fall the first day and septals as soon as flowers is well opened. Abundant locally in woods along Red River and a short distance up the main tributaries. This is a popular wildflower and may be destroyed by picking because the rhizomes pull up easily. It was abundant in many places but use of woods for pasture has destroyed much of it. (Stevens, O. A. (1963). Handbook of North Dakota plants)
Sanguinaria canadensis (bloodroot) is a perennial, herbaceous flowering plant native to eastern North America. It is the only species in the genus Sanguinaria, included in the family Papaveraceae, and most closely related to Eomecon of eastern Asia.