Gerardia may refer to: Gerardia L., a plant genus now a synonym of Stenandrium Nees in family Acanthaceae Gerardia Benth., a plant genus now a synonym of Agalinis Raf. in family Orobanchaceae Gerardia Lacaze-Duthiers, 1864, a genus of cnidarians, now a synonym of Savalia Nardo, 1844 Common names of several species of Agalinis Raf. formerly in Gerardia Benth., including: Agalinis acuta Agalinis auriculata Agalinis purpurea Agalinis skinneriana Agalinis tenuifolia