This impressive volume presents 60 genera and 500 species of yeasts. The aims of The Yeasts is two-pronged -first, presenting and discussing a classification of yeasts including diagnoses of genera and descriptions of species, and second, providing methods for the identification of yeast strains. Knowledge of the basidioporogenous yeasts has increases considerably in recent years. These yeasts are now classified in two taxonomically different groups, the teliospore-forming yeasts and the Filobasidiaceae. There are also other basidiomycetous fungi, such as the Tremellales, with a yeast phase in their life cycle. The descriptions of the yeast states of several of these species have been included in this edition. The taxonomic system proposed is a large step in the evolution of a satisfactory classification. More than 1000 pages of information from 16 contributors -well laid out and easy to consult, classified for easy access. The Fourth Revised Edition, edited by C.P. Kurtzman and J. Fell, is due for publication in 1998.