The plant bloodroot, Sanguinaria canadensis.
Rumex sanguineus, bloody dock, wood dock, bloody-veined dock.
Sanguinary, common yarrow, Achillea millefolium.
Capsella bursa-pastoris, shepherd's purse.
Any of the Haemodoraceae, a family of flowering plants some of whose roots contain a red dye.
Various species in the genus Sanguisorba, burnet.
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).