Abstract: The Guatteria-group consists of four neotropical genera,Guatteria,Guatteriopsis,Guatteriella,and Heteropetalum.Its systematic position within Annonaceae,interpreted by different authors based on various sources of evidence,is quite questionable.In this paper phylogenetic and phenetic analyses were carried out by using 44 phylogenetically informative characters from morphology,leaf and wood anatomy,as well as palynology of 38 annonacaeous genera with Magnoliaceae as outgroup.The phylogenetic analysis indicates that the phylogeny of selected genera in Annonaceae is weakly supported with branching paterns determined by few,mostly homoplasios,characters.

Key words: Guatteria-group, Annonaceae, Phylogeny