plant families described is in two parts. The first part gives the general characteristics of the family, mentions some of the principal economic and ornamental plants and includes a section on classification. The second part describes in detail a typical representative of the family, as far as possible a plant which is common in the wild or in cultivation and therefore easily obtainable. In this new edition there is a larger page-size, and also a different layout of the text. In addition, a considerable number of illustrations have been redrawn and many more added, including drawings of whole plants. Alterations to the text include extensive revision of the introduction, an increase in the number of comparative tables, and the addition of a table of family characters.

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