Following limited testing in 1972, extended excavations were conducted during 1973 and 1974 of the Cactus Flower site. Ten occupations and a long series of natural stratigraphic units were defined. Although sporadic occupation during the Pelican Lake phase is apparent, most of the levels are attributable to the McKean Complex, dated between 3000 and 1500 B.C. This occupation at Cactus Flower appears to represent late spring to early autumn hunting camps. The excavations provide the best picture to date of the McKean Complex on the Canadian Plains.

When you're out and about, keep this tabbed booklet by Nora and Rick Bowers close at hand. Featuring only Southwest cacti of Arizona, California, Nevada, New Mexico, Utah, Colorado and Texas, the booklet is organized by group for quick and easy identification. Narrow your choices by group, and view just a few cacti at a time. The pocket-sized format is much easier to use than laminated foldouts, and the tear-resistant pages help to make the book durable in the field.

"There is nothing in the world like this book. It should be in every library and on the bookshelves of all those interested in cacti. The book will be an important resource for plant physiology, agronomy, and horticulture classes at both the undergraduate and graduate level."—Bruce Smith, Brigham Young University "Cacti: Biology and Uses is a landmark publication of one of the world's most unique group of plants. Park Nobel, a leading authority on succulent plants, has assembled a collection of contributions that spans a wide range of issues extending from basic systematics, anatomy, physiology and ecology to considerations of conservation and human uses of this diverse group of plants. This nicely-produced and well-illustrated volume provides a resource that will be of great use to a wide range of scientists, practitioners, and enthusiasts of this plant group."—Harold Mooney, Paul S. Achilles Professor of Environmental Biology, Stanford University

In Texas Cacti, authors Brian and Shirley Loflin present a concise, fully illustrated field guide to more than one hundred of the cacti most often found in Texas and the surrounding region. The book opens with an illustrated introduction to cactus habitat and anatomy. The species are then organized by stem shape, with each account featuring detailed color photographs, specific identifying features (including spines, flowers, fruits, and seeds) and information about common and scientific names, habitat, flowering season, and more.?The photographs, range maps, and icons designating shape, conservation status, and blooming period, along with easy-to-understand descriptions, make this book a quick and friendly guide to cactus identification for botanists, amateur naturalists, and cactus enthusiasts alike.

The Cactus Primer presents the amateur cactophile with an excellent introduction to cactus biology and provides the informed reader with an invaluable summary of the last forty years' research. This book goes far beyond books that instruct readers in the propagation, growth, and care of these plants; addressing matters of more scientific interest, it takes an integrated approach to the presentation of the form, physiology, evolution, and ecology of cacti. The book is unique in that it combines the descriptive morphology and physiology documented in the scientific literature with more general observations found in popular publications on cacti. It provides a new generic classification of the cacti and contains much new information, including data on photosynthesis, heat and cold tolerance, computer modeling of ribs, and the effects of spines. Enhanced by over 400 illustrations and supplemented with an extensive glossary, this book will appeal to cactus enthusiasts interested in the classification and growth of cacti, as well as to plant biologists who use cacti to illustrate desert adaptation and convergent evolution. Written in accessible style, The Cactus Primer is bound to serve a dual function as both an instructive tool and a reference work in cactus biology for years to come.

Cacti are full of contradictions. Although many are found in the driest and most barren environments on earth, some grow exclusively in the branches of the rainforest canopy. Many species bristle with ferocious-looking spines, while other varieties are perfectly smooth. And while they might strike us as the most austere plants on earth, nearly all of them exhibit remarkable floral displays—some even larger than the plant itself. In Cactus, Dan Torre explores these unique plants as they appear all around the world and throughout art, literature, and popular culture. As Torre shows, cacti have played a prominent role in human history for thousands of years. Some species were revered by ancient civilizations, playing a part in their religious ceremonies; other varieties have been cultivated for their medicinal properties and even as a source of dye, as in the case of the prickly pear cactus and the cochineal insect, the source of red carmine used in everything from food to lipstick. Torre examines how cacti have figured in low-footprint gardens, as iconic features of the landscapes of Westerns, and as a delicious culinary ingredient, from nutritious Nopal pads to alluring Pitaya—or Dragon—fruits. Entertaining and informative, this book will appeal to any of us who have admired these hardy, efficient plants.

Discusses the impact of syphilis on many of history's famous figures, detailing the specific ways in which the disease influenced the lives and works of such figures as Beethoven, Vincent van Gogh, Columbus, Abraham Lincoln, Hitler, and Oscar Wilde. 20,000 first printing.