Livia Wanntorp currently works as a researcher at the Swedish Museum of Natural History in Stockholm where she leads several projects involving flower morphology and systematics of many different groups of the flowering plants. She is associate editor of the journal Plant Systematics and Evolution and president of the Swedish Systematics Association. Louis Ronse De Craene is director of the MSc course on Biodiversity and Taxonomy of Plants at the Royal Botanic Garden, Edinburgh. His research interests include the morphology and evolution of flowers and encompass a broad range of angiosperm families. He is the author of Floral Diagrams: An Aid to Understanding Flower Morphology and Evolution (Cambridge University Press, 2010).

"... [an] excellent symposium volume. A useful work for specialists and advanced students." Recommended." R. Schmid, Choice Magazine

• List of contributors; Acknowledgements; 1. Introduction: establishing the state of the art – the role of morphology in plant systematics Louis Ronse De Craene and Livia Wanntorp; 2. Spatial separation and developmental divergence of male and female reproductive units in gymnosperms, and their relevance to the origin of the angiosperm flower Richard Bateman, Jason Hilton and Paula Rudall; 3. New flowers of Laurales from the Early Cretaceous (Early to Middle Albian) of eastern North America Maria von Balthazar, Peter R. Crane, Kaj Raunsgaard Pedersen and Else Marie Friis; 4. Tracing the early evolutionary diversification of the angiosperm flower James A. Doyle and Peter K. Endress; 5. Changing views of flower evolution and new questions Peter K. Endress; 6. Centrifugal stamens in a modern phylogenetic context – was Corner right? Paula Rudall; 7. Evolution of the palm androecium as revealed by character mapping on a supertree Sophie Nadot, Julie Sannier, Anders Barfod and William J. Baker; 8. Comparative floral structure and development of Nitrariaceae (Sapindales) and systematic implications Julien B. Bachelier, Peter K. Endress and Louis P. Ronse De Craene; 9. Multiplications of floral organs in flowers – a case study in Conostegia (Melastomataceae, Myrtales) Livia Wanntorp, Carmen Puglisi, Darin Penneys and Louis Ronse De Craene; 10. Ontogenetic and phylogenetic diversification in Marantaceae – a review Alexandra C. Ley and Regine Claßen-Bockhoff; 11. Floral ontogeny of Acacia celastrifolia: an enigmatic mimosoid legume with pronounced polyandry and multiple carpels Gerhard Prenner; 12. Floral development of Napoleonaea (Lecythidaceae), a deceptively complex flower Louis Ronse De Craene; Taxon index; Subject index.

Livia Wanntorp currently works as a researcher at the Swedish Museum of Natural History in Stockholm where she leads several projects involving flower morphology and systematics of many different groups of the flowering plants. She is associate editor of the journal Plant Systematics and Evolution and president of the Swedish Systematics Association. Louis Ronse De Craene is director of the MSc course on Biodiversity and Taxonomy of Plants at the Royal Botanic Garden, Edinburgh. His research interests include the morphology and evolution of flowers and encompass a broad range of angiosperm families. He is the author of Floral Diagrams: An Aid to Understanding Flower Morphology and Evolution (Cambridge University Press, 2010).

"... [an] excellent symposium volume. A useful work for specialists and advanced students." Recommended." R. Schmid, Choice Magazine

• List of contributors; Acknowledgements; 1. Introduction: establishing the state of the art – the role of morphology in plant systematics Louis Ronse De Craene and Livia Wanntorp; 2. Spatial separation and developmental divergence of male and female reproductive units in gymnosperms, and their relevance to the origin of the angiosperm flower Richard Bateman, Jason Hilton and Paula Rudall; 3. New flowers of Laurales from the Early Cretaceous (Early to Middle Albian) of eastern North America Maria von Balthazar, Peter R. Crane, Kaj Raunsgaard Pedersen and Else Marie Friis; 4. Tracing the early evolutionary diversification of the angiosperm flower James A. Doyle and Peter K. Endress; 5. Changing views of flower evolution and new questions Peter K. Endress; 6. Centrifugal stamens in a modern phylogenetic context – was Corner right? Paula Rudall; 7. Evolution of the palm androecium as revealed by character mapping on a supertree Sophie Nadot, Julie Sannier, Anders Barfod and William J. Baker; 8. Comparative floral structure and development of Nitrariaceae (Sapindales) and systematic implications Julien B. Bachelier, Peter K. Endress and Louis P. Ronse De Craene; 9. Multiplications of floral organs in flowers – a case study in Conostegia (Melastomataceae, Myrtales) Livia Wanntorp, Carmen Puglisi, Darin Penneys and Louis Ronse De Craene; 10. Ontogenetic and phylogenetic diversification in Marantaceae – a review Alexandra C. Ley and Regine Claßen-Bockhoff; 11. Floral ontogeny of Acacia celastrifolia: an enigmatic mimosoid legume with pronounced polyandry and multiple carpels Gerhard Prenner; 12. Floral development of Napoleonaea (Lecythidaceae), a deceptively complex flower Louis Ronse De Craene; Taxon index; Subject index.

Livia Wanntorp currently works as a researcher at the Swedish Museum of Natural History in Stockholm where she leads several projects involving flower morphology and systematics of many different groups of the flowering plants. She is associate editor of the journal Plant Systematics and Evolution and president of the Swedish Systematics Association. Louis Ronse De Craene is director of the MSc course on Biodiversity and Taxonomy of Plants at the Royal Botanic Garden, Edinburgh. His research interests include the morphology and evolution of flowers and encompass a broad range of angiosperm families. He is the author of Floral Diagrams: An Aid to Understanding Flower Morphology and Evolution (Cambridge University Press, 2010).

"... [an] excellent symposium volume. A useful work for specialists and advanced students." Recommended." R. Schmid, Choice Magazine

• List of contributors; Acknowledgements; 1. Introduction: establishing the state of the art – the role of morphology in plant systematics Louis Ronse De Craene and Livia Wanntorp; 2. Spatial separation and developmental divergence of male and female reproductive units in gymnosperms, and their relevance to the origin of the angiosperm flower Richard Bateman, Jason Hilton and Paula Rudall; 3. New flowers of Laurales from the Early Cretaceous (Early to Middle Albian) of eastern North America Maria von Balthazar, Peter R. Crane, Kaj Raunsgaard Pedersen and Else Marie Friis; 4. Tracing the early evolutionary diversification of the angiosperm flower James A. Doyle and Peter K. Endress; 5. Changing views of flower evolution and new questions Peter K. Endress; 6. Centrifugal stamens in a modern phylogenetic context – was Corner right? Paula Rudall; 7. Evolution of the palm androecium as revealed by character mapping on a supertree Sophie Nadot, Julie Sannier, Anders Barfod and William J. Baker; 8. Comparative floral structure and development of Nitrariaceae (Sapindales) and systematic implications Julien B. Bachelier, Peter K. Endress and Louis P. Ronse De Craene; 9. Multiplications of floral organs in flowers – a case study in Conostegia (Melastomataceae, Myrtales) Livia Wanntorp, Carmen Puglisi, Darin Penneys and Louis Ronse De Craene; 10. Ontogenetic and phylogenetic diversification in Marantaceae – a review Alexandra C. Ley and Regine Claßen-Bockhoff; 11. Floral ontogeny of Acacia celastrifolia: an enigmatic mimosoid legume with pronounced polyandry and multiple carpels Gerhard Prenner; 12. Floral development of Napoleonaea (Lecythidaceae), a deceptively complex flower Louis Ronse De Craene; Taxon index; Subject index.