- Trichostema, genus Trichostema - genus of North American aromatic herbs or subshrubs: blue curls
--1 is a kind of asterid dicot genus
--1 is a member of
--1 has members:Labiatae, family Labiatae, Lamiaceae, family Lamiaceae, mint family blue curls; black sage, wooly blue curls, California romero, Trichostema lanatum