- Minnesota Flora: An Illustrated Guide to the Vascular Plants of Minnesota
- Western Wetland Flora: An Introduction to the Wetland and Aquatic Plants of the Western United States
- Grasses of the Southwest: A Key to Common Species Using Vegetative Features
- Wild Food Plants of the South Pacific and Southeast Asia
- Wetland and Aquatic Plants of the Northern Great Plains: A field guide for North and South Dakota, Nebraska, eastern Montana and eastern Wyoming