Plant Systematics investigates the principles and practices of classifying and understanding the evolutionary relationships among plants. This textbook, authored by Walter S. Judd, aims to provide a comprehensive overview of the field. It likely covers the history of plant classification, the various systems that have been proposed, and the modern approaches used to reconstruct plant phylogeny. The book would typically detail the morphological, anatomical, and molecular data used in systematic studies, alongside discussions of biogeography and conservation.

As a foundational textbook in the field of plant systematics, this work is generally regarded as a comprehensive and authoritative resource for students and researchers. Its detailed coverage of classification principles, evolutionary relationships, and the diverse array of plant families makes it a standard reference. The text is often cited for its thoroughness in integrating traditional morphological data with modern molecular techniques, providing a robust framework for understanding plant diversity.