Floral ontogeny of Annonaceae: evidence for high variability in floral form

Background and Aims Annonaceae are one of the largest families of Magnoliales. This study investigates the comparative floral development of 15 species to understand the basis for evolutionary changes in the perianth, androecium and carpels and to provide additional characters for phylogenetic investigation. Methods Floral ontogeny of 15 species from 12 genera is examined and described using s…