- 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
- Prairie Plants of Illinois: A Field Guide to the Prairie Grasses and Wildflowers of Illinois and the Midwest