Papers from an August 1994 meeting of the Phytochemical Society of North America explore trends in medicinal plants research, especially plants of Latin America. Contributors demonstrate the importance of plant-based medicinals used as adaptogens, immunostimulants, cancer preventatives, and anti-AIDS and anti-cancer agents, and provide insights into how ethnobotanical traditions can lead to new discoveries in phytochemical and biological activity. They describe the latest techniques for phytochemical analysis and root culture, and computer modeling techniques. Includes in-depth reviews of the phytochemistry and biological activity of acetogenins and neo- clerodane diterpenes. Annotation c. by Book News, Inc., Portland, Or.