By contrast Thorne, who produced his system in 1968, created five superorders amongst the monocotyledons, but called the superorder corresponding to Lilianae, by the older name of Liliiflorae, with only one order, Liliales. Thorne produced many revisions of his original scheme but in 1992 he decided to follow the practice of his contemporaries (Takhtajan, Cronquist and the Dahlgrens) and abandon the use of Liliiflorae (since the suffix only applied to angiosperms) and adopt Lilianae. In this version Lilianae was one of nine superorders within subclass Liliidae (monocotyledons) and contained five orders, Liliales, Burmanniales, Asparagales, Dioscoreales, and Orchidales. Huber's study of the seed-coat characteristics of Liliiflorae (Liliifloren) in 1969, and his integration of these with other evidence resulted in a radically novel taxonomy for this group. His much narrower conception of families, was an important stepping stone towards the modern family structure.