The most popular method of identification is by means of illustrations. In this book will be found illustrations of 1311 species, belonging to 534 genera. As the total number of genera described here is 552 it will be seen that nearly every genus of tree or shrub cultivated in our gardens has been figured. To illustrate every species, amounting to 1732 in all, would have made the book too bulky and expensive. It should not, however, so difficult to name any ...
