Flowering plant origin, evolution and phylogeny : [proceedings of a symposium entitled "The origin, early evolution, and phylogeny of Angiosperms", held at the American institute of biological sciences meeting at Ames, Iowa, on August 4, 1993

Contributors ix Chapter Introduction: The Challenge of Flowering Plant History David Winship Taylor and Leo J. Hickey Chapter 2. A Survey of Reticulate Venation Among Fossil and Living Land Plants Mary Louise Trivett and Kathleen B. Pigg Chapter 3. A New Gnetophyte from the Late Carnian (Late Triassic) of Texas and its Bearing on the Origin of the Angiosperm Carpel and Stamen 32 Bruce Cornet Chapter 4. Wood Anatomy of Primitive Angiosperms: New Perspectives and Syntheses 68 Sherwin Carlquist Chapter 5. Evidence for the Earliest Stage of ~giosperm Pollen Evolution: A Paleoequatodal Section from Israel 91 Gilbert J. Brenner Chapter 6. The Origin and Evolution of the Angiosperm Carpel 116 David Winship Taylor and Gretchen Kirchner Chapter Floral Structure, Development, and Relationships of Paleoherbs: Saruma, Cabomba, Lactoris, and Selected Piperales 141 Shirley Tucker and Andrew Douglas Chapter 8. Origin of the Angiosperm Flower 176 Leo J. Hickey and David Winship Taylor Chapter Evidence for and Implications of an Herbaceous Origin for Angiosperms 232 David Winship Taylor and Leo Z Hickey Chapter Comparison of Alternative Hypotheses for the Origin of the Angiosperms 267 Henry Loconte 10. 9. W. C. 7. 1. CONTENTS vi Contents Chapter The Least Specialized Angiosperms 286 Robert F. Thorne Chapter Molecular Phylogenies and the Diversification of the Angiosperms 314 Kenneth J. Sytsma and David A. Baum 341 References Appendix. Stratigraphic Time Scale 387 Index 12. 11.

The origin, early evolution and basal phylogeny of angiosperms continue to be areas of ferment in botanical research. Rapid progress is being made, in part due to the unprecedented number of approaches now available and to the increased amount of empirical data. The topics of angiosperm structure and evolution are covered in several chapters that discuss vegetative and reproductive characters, as well as discuss the implications of ancestral angiosperm characters for an herbaceous origin. The last chapters discuss the phylogeny of angiosperms from a structure and molecular perspective.

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A collection of 12 articles presenting new research into the origin, early development, and basal phylogeny of the flowering plants. The volume is organized in three sections: outgroup structure; basal angiosperm structure and evolution; and angiosperm phylogeny and systematics. Topics include a survey of reticulate venation among fossil and living land plants; floral structure, development, and relationships of paleoherbs; and molecular phylogenies and the diversification of the angiosperms. Some b&w illustrations, photographs. Annotation c. Book News, Inc., Portland, OR (booknews.com)

Front Matter....Pages i-ix Introduction: The Challenge of Flowering Plant History....Pages 1-7 A Survey of Reticulate Venation Among Fossil and Living Land Plants....Pages 8-31 A New Gnetophyte from the Late Carnian (Late Triassic) of Texas and its Bearing on the Origin of the Angiosperm Carpel and Stamen....Pages 32-67 Wood Anatomy of Primitive Angiosperms: New Perspectives and Syntheses....Pages 68-90 Evidence for the Earliest Stage of Angiosperm Pollen Evolution: A Paleoequatorial Section from Israel....Pages 91-115 The Origin and Evolution of the Angiosperm Carpel....Pages 116-140 Floral Structure, Development, and Relationships of Paleoherbs: Saruma, Cabomba, Lactoris, and Selected Piperales....Pages 141-175 Origin of the Angiosperm Flower....Pages 176-231 Evidence for and Implications of an Herbaceous Origin for Angiosperms....Pages 232-266 Comparison of Alternative Hypotheses for the Origin of the Angiosperms....Pages 267-285 The Least Specialized Angiosperms....Pages 286-313 Molecular Phylogenies and the Diversification of the Angiosperms....Pages 314-340 Back Matter....Pages 341-403 Flowering Plant Origin, Evolution and Phylogeny brings together the work of an international group of experts to provide a current understanding of research into the origin, early evolution, and basal phylogeny of the flowering plants. This important volume combines, in a single, convenient resource, the wealth of information now available as a result of new research. Of particular importance are the survey of the botanical aspects of angiosperm origin and early evolution and coverage of current research directions. Flowering Plant Origin, Evolution and Phylogeny offers information of value to anyone interested in the evolution of the dominant flora on Earth. In addition, the book provides important insights for all those interested in the structure, origin and early development of the angiosperms, including systematists, morphologists, and paleobotanists. A special feature of the book is a geological time-scale to aid those who are unfamiliar with stratigraphic terminology.