This text integrates the revolution in the molecular-developmental genetics of plants with mainstream evolutionary thought. There is increasing co-operation between strongly genomics-influenced researchers, with their strong grasp of technology, and evolutionary morphogenetists and systematics who are more deeply rooted in comparative biology and patterns of plant evolution. This book discusses our increasing understanding of gene function and expression, along with modern phylogenies integrating morphological and molecular data to highlight specific key transitions in plant evolution most...