Gentianaceae, Boraginaceae, Scrophulariaceae, Lamiaceae, Campanulaceae, Asteraceae, Liliaceae, Iridaceae, Orchidaceae, Juncaceae, Cyperaceae, Poaceae, Pinaceae, Cupressaceae, Aspleniaceae, Polypodiaceae. Subdivisions The kingdom is subdivided into three floristic subkingdoms and nine floristic regions. Boreal Subkingdom Circumboreal Region Eastern Asiatic Region North American Atlantic Region Rocky Mountain Region Tethyan Subkingdom Macaronesian Region Mediterranean Region Saharo-Arabian Region Irano-Turanian Region Madrean Floristic Region Madrean Region References Floristic kingdoms Holarctic flora