WordNet sense 1 (perennial plant of eastern North America having hairy foliage yielding a red or yellow pigment):

Lithospermum caroliniense

WordNet sense 2 (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):

bloodroot, redroot, tetterwort, Sanguinaria canadensis