Micheal Keeling 
Green Plants 
Their Origin and Diversity

The aim of this textbook is that the student should regard the autotrophic plants as a whole, appreciating that, no matter whether he is considering lowly aquatic unicells or complex multicellular land plants producing elaborate inflorescences, he is throughout concerned with the action of natural selection on basic mechanisms of growth and development. To illustrate this theme, the authors have drawn, where appropriate, on paleobotanical and experimental evidence. The material is profusely illustrated with drawings, many being originals prepared especially for this book. The book contains eight chapters such as, The principles of Governing the evolution of Autographs; The Algae, I; The Algae, II; The Bryophyta; The Tracheophyta, I; The Tracheophyta, II; The Tracheophyta, III; The Tracheaphyta, IV. At the end glossary of technical terms have been added to understand the terms easily. The book has been written in such a manner with simple and lucid style that the student can grasp each and every concept easily. This is an undergraduate textbook of morphology which avoids a disconnected treatment of types. Providing a concise account of the structure and reproduction of the varied group of autorophic plants, it also considers the likely origin of each level of organization and its possible selective advantages.