"For persons with a special interest in succulents, and cacti in particular, this book is a must. Others will find the volume of value not only as a means of naming these highly specialized plants but as a source of information on the structure and distribution of the various species."—American Scientist
"Of tremendous value to the professional botanist and ecologist, and with layman English and careful instructions, the work provides the amateur botanist insight into a fascinating family."—Garden Journal
"For the general desert lover as well as the botanist."—Books of the Southwest