紫草屬
Puccoon \Puc*coon"\, n. [From the American Indian name.] (Bot.) Any one of several plants yielding a red pigment which is used by the North American Indians, as the bloodroot and two species of {Lithospermum} ({L. hirtum}, and {L. canescens}); also, the pigment itself.
Lithospermum n : annual or perennial herbaceous or shrubby plants; cosmopolitan except Australia [syn: {genus Lithospermum}]