Abstract: The present paper conducts cladistic analysis to evaluate the infrafamilial phylogenetic relationships of Magnoliaceae on an extensive literature review and study of the herbarium. In the cladistic analysis, the genus Uvaria of Annonaceae was chosen as an outgroup. The polarity of characters was determined mainly according to outgroup comparison, fossil evidence and general-ly accepted viewpoints of morphological evolution. Finally, a data matrix consisting of 31 termi-nal taxa and 27 characters was analyzed using PAUP 3.1.1 in Macintoch computer and Henning 86 in IBM computer, and 50 cladograms were generated, of which only the most parsimonious one was presented for discussion.

Key words: Magnoliaceae