My Father is the Gardener, Devotions in Botany and Gardening of the Bible

The Desert Edge: Flora of Guaymas-Yaqui Region of Sonora, Mexico

Manual of Montana Vascular Plants, 2nd Edition

Nevada Plants: An Annotated Checklist of the State’s Botanical Diversity

Legumes of Arizona: An Illustrated Flora and Reference

Plant Guide: Natural History, Channel Islands, California

Plants of the Pineywoods of East Texas & West Louisiana

Putting Down Roots: Foundations of Botany at Carolina