This text investigates the physiological mechanisms and environmental factors that govern the process of transpiration in vascular plants. A. J. Rutter, an established authority in plant ecology, synthesizes experimental data to explain how water movement from roots to leaves is regulated. The work provides a structured framework for understanding the physical forces of evaporation and the biological control exerted by stomatal aperture. It serves as a technical examination of the water economy within plant systems.

Experts recognize this volume as a foundational technical resource for students and researchers in plant physiology. Readers frequently note the concise, academic density of the prose, which prioritizes empirical clarity over broad narrative.