Voss and Reznicek are curator emeritus and curator, respectively, of the University of Michigan's herbarium. Their new Field Manual of Michigan Flora summarizes much information about all the species of vascular plants in Michigan and provides dichotomous keys to help readers identify unknown plants. It is more a reference manual than a textbook; it is not designed for reading cover to cover, but rather for providing the user with brief information about all the species of the state. The volume is broken down taxonomically, and every taxon contains a brief description of the habitat in which it grows and a county-level distribution map. Some species accounts include helpful notes about the taxonomy or about species with which they are easily confused. No illustrations are provided, which is a shortcoming. However, the volume offers nearly 1,000 pages packed full of useful information. A glossary supports the text; this is a must because the book is filled with jargon, of necessity. The guide updates and improves on Voss's three-volume Michigan Flora (1972-96). Summing Up: Highly recommended. All academic, professional, and general regional botany collections. A. Prather Michigan State University