Richard Stephen Felger is a researcher with the Herbarium, School of Plant Sciences, University of Arizona. He has published widely on arid-land botany, ethnobotany, and conservation, and he is a coauthor of Plant Life of a Desert Archipelago: Flora of the Sonoran Islands in the Gulf of California.
James Thomas Verrier is a professional horticulturist and a researcher affiliated with the University of Arizona School of Plant Sciences.
Kelly Kindscher is a plant ecologist and ethnobotanist at the University of Kansas. His recent works include Echinacea: Herbal Medicine with a Wild History.
Xavier Raj Herbst Khera has a keen interest in new arid-land food crops and horticulture, especially desert plants. He is a Silver City, New Mexico, native and an outdoor enthusiast.