Acacia is, with almost 1000 species, the largest genus of vascular plants in Australia. The present double volume is the outcome of many years of work resulting in this impressive book on the Australian Wattles. In the introduction brief discussions on Classification and Phylogeny, Phytogeography, Fossil record, and Uses are presented. From the paragraphs on classification and phylogeny it is clear that a lot more work has to be done to solve remaining problems of relationship between species, groups and subgroups. The key, to all species!, covers no less than 152 pages. All species are illustrated with black and white drawings of important details, 128 with colour photographs as well. Maps to all species are included. The descriptions are in the usual format of the Flora of Australia.