XVI International Botanical Congess
MatK gene of cpDNA were sequenced from 18 species of 15 genera of Magnoliaceae (Law, 1997), to reconstruct phylogenetic relationships. Monophyly of Magnoliaceae was strongly supported. Liriodendron was cladistically basal within the family with a 100% bootstrap value supported. All other species of the family formed another monophyletic clade, which included three clades: Manglietia, Subgenus Magnolia and all other species. Paraphyly was showed within Magnolia. Subgenus Yulania was more closely related to Michelia than to Subgenus Magnolia. There were very low sequence divergences (0.4B0.9%) among Michelia, Tsoongiodendron, Paramichelia and Alcimandra, and Kmeria, Parakmeria and Manglietiastrum respectively, which showed very close relationships among the genera and suggested their taxonomic position should be reconsidered.