The author wishes to thank the following for their invaluable assistance in identifying the more difficult plant subjects:
Dick Anderson, Chiricahua National Monument
Arizona-Sonora Desert Museum Botany Department, Tucson
Michael Bencic, Wupatki National Monument
Dr. Susann Biddulph
Jane Cole, Desert Botanical Garden, Phoenix
Dr. Carol Crosswhite, Boyce Thompson Southwestern Arboretum
Robert Dyson, Alpine Ranger District
Karen Foster, Saguaro National Park West
Peggy Lu Gladhill, Alpine Ranger District
Wendy Hodgson, Desert Botanical Garden, Phoenix
Philip D. Jenkins, The University of Arizona, Tucson
Ron Kearns, Kofa Mountain Wildlife Refuge
Les Landrum, Arizona State University, Tempe
Dr. Charles Mason, The University of Arizona, Tucson
Sandy Mcmahan, Saguaro National Park West
Vince Ordonez, Apache-Sitgreaves National Forest
Barbara Phillips, Coconino National Forest
Dr. Donald J. Pinkava, Arizona State University, Tempe
Patrick Quirk, Desert Botanical Garden, Phoenix
Roy Simpson, Chiricahua National Monument
Kathy Warren, Grand Canyon National Park