The Dahlgren system and the Thorne system ( 1992 ) also recognized this family, and placed it in order Liliales in superorder Lilianae in subclass Liliidae ( monocotyledons ) of class Magnoliopsida ( angiosperms ).
12.
The Dahlgren system also recognised the order and placed it in superorder Magnolianae, in subclass Magnoliideae ( Dahlgren's dicotyledons ), in class Magnoliopsida with the same circumscription of families as the Chronquist system.
13.
Although mostly the order will consist of the orchids only ( usually in one family only, but sometimes divided into more families, as in the Dahlgren system, see below ), sometimes other families are added:
14.
Over the next century, authors have variously treated this group as a distinct family or as a subfamily of the Ericaceae, though the trend from Margaret W . Henderson ( 1919 ) onward was toward the latter subfamily classification, albeit, the influential Cronquist and Dahlgren systems continued to treat the group as the family Monotropaceae, separate from the Ericaceae.
