| trichostema | (n) genus of North American aromatic herbs or subshrubs: blue curls, Syn. genus Trichostema |
| bastard pennyroyal | (n) aromatic plant of the eastern United States, Syn. Trichostema dichotomum |
| black sage | (n) an aromatic plant with wooly leaves found in southern California and Mexico, Syn. Trichostema lanatum, California romero, wooly blue curls |
| turpentine camphor weed | (n) aromatic plant of western United States, Syn. vinegarweed, Trichostema lanceolatum, camphorweed |