perennial plant of eastern North America having hairy foliage yielding a red or yellow pigment

[ Syn: lithospermum caroliniense ]

perennial woodland native of North America having a red root and red sap and bearing a solitary lobed leaf and white flower in early spring and having acrid emetic properties; rootstock used as a stimulant and expectorant

[ Syn: bloodroot , redroot , tetterwort , sanguinaria canadensis ]