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This manual of the Texas flora is a monumental work and the authors, D. S. Correll and M. C. Johnston, as well as their collaborators, deserve the compliments of syste matists on its publication. A definitive treatment of a large and complex flora (174 families, 1216 genera, 4839 species and 576 subspecies and varieties in Texas) must depend to a considerable extent upon the labors of predecessors. There has been a long and active series of collectors and publishers interested in Texas plants, and they have pro vided an excellent basis for a comprehensive flora. How ever, the special research on the Texas flora by the authors, and their extensive field experience with it, have brought to this publication an important element of personal knowl edge. Fifty-six collaborators have provided the treatments of 20 families and of 38 separate genera. Both the authors and the collaborators are to be congratulated upon this productive cooperation. The book is well made up and the format and typography make it easy to use. An introduction provides a brief ac count of the principal vegetation regions in Texas. This is followed by a key to the families and the taxonomic treat ment of the flora, which encompasses 1700 pages. A brief appendix adds critical comments and some additional spe cies from data obtained during the course of publication. The list of Abbreviations of Authors' Names deserves special mention. It is in fact far more than the title states. It includes birth and death dates, and a variety of other information such as the principal professional position, or other occupation, major publications, groups or floras studied, and sometimes mention of other significant contri butions to botany. The inclusion of this information will