Definitions for "Trilliaceae"
small family of herbs having flowers with 3 petals and 3 sepals; in some classification systems considered a subfamily of the Liliaceae
Trilliaceae is the botanical name of a family of flowering plants. The family has been recognised as distinct since 1846 when it was recognized; this table http://www.goldsword.com/sfarmer/Trillium/TrilliaceaeHistory.pdf for a summarizes the placement of these taxa. The family has been recognized by taxonomists such as Takhtajan, Dahlgren, Thorne, and Watson & Dallwitz; other taxonomists have considered these plants to belong to the family Liliaceae.