Book excerpt: Twenty-two papers from the August 2000 conference in Berkeley discuss the biology and ecology of microorganisms associated with the aerial surface of plants. Covering the physical and chemical environment of plant surfaces, the interactions between epiphytes and their hosts, interactions between microbes, agricultural practices and food quality, and models of interactions and movement of microbes, the volume represents the work of plant pathologists, horticulturalists, ecologists, microbiologists, and other scientists from North America, Europe, Australia, Iran, and the Philippines. Annotation copyrighted by Book News Inc., Portland, OR.