|This group of plants includes both alpine plants suitable for the rock garden enthusiast and more tender species
which are grown under glass by succulent plant growers. There has long been a need for a suitable treatment
of the genus which would be useful to these people as former publications were mostly of a spcialist botanical
nature. This book undoubtedly meets this need. The genus is a large one and of a very wide geographical spread.
Restricting the scope of the book to only those species normally found in cultivation is therefore a very sensible
idea. Even with this limitation over 400 species are covered in some considerable detail. This book is very well
llustrated with line drawings and black and white photographs and a number (110) of colour photographs.