Any one of several plants yielding a red pigment which is used by the North American Indians, such as the bloodroot and two species of Lithospermum, Lithospermum hirtum and Lithospermum canescens.
The red pigment (dye) obtained from these plants.
Any of several plants with red roots, such as the New Jersey tea (Ceanothus americanus), the gromwell (Lithospermum arvense), the bloodroot (Sanguinaria canadensis), and Lachnanthes caroliniana (syn. Lachnanthes tinctoria).