Systematic position of the Trilliaceae, Smilacaceae, Dioscoreaceae, Herreriaceae, Tecophilaeaceae families and the volume and phylogeny of the Asparagales (based on the seed structure)

摘要

The volume of the Asparagales (superorder Asparaganae sensu Oganezova, 1989) is established based on seed structure. The families Asparagaceae s.l., Luzuriagaceae, Dracaenaceae s.l., Hypoxidaceae, Phormiaceae, Herreriaceae, Tecophilaeaceae and Smilacaceae are included into this order. The family Dioscoreaceae is separated out into its own order Dioscoreales. The Trilliaceae should be raised to a separate order within the superorder Asparaganae. The volume of the Tecophilaeaceae (Tecophilaeales) is not clear, however its relation to Asparagales is apparent.