Norman summarizes the morphological information about all the genera in this family and lays out a new infrageneric classification of Buddleja. Two new species of Buddleja, one new subspecies, and one new combination are described. Volume includes regional keys, keys to the 12 series of Buddleja, and an appendix listing the Old World Buddleja adventives in the Neotropics. S. R. Jensen provides a treatment of the chemistry of Buddlejaceae. Also included are treatments of two species of Emorya and two monotypic genera, Polypremum and Peltanthera.