I am a wetland scientist and environmental planner. I use Sarah Cookes book on a regular basis for the identification of wetlands. This book is awesome! The CLEAR pictures, plant keys, and plant descriptions are exteremely useful. The plant field indicator status is a help for the wetland delineator. Sarahs book is a MUST for any outdoors enthusiast, developer, wetland scientist, or environmental planner!
This is a must for anyone working with wetlands. It has descriptions, drawings and photos of most wetland plants.