Designed to be used by both gardeners and botanists, this book describes 430 species of Primula, presenting a major modern revision of this widespread genus.;With information on the newly described species, over 30 new illustrations, and important fresh details on the evolutionary history of primulas from recent DNA evidence, the revision brings this classic reference work up to date.;Each species is treated systematically with accounts of its taxonomy, evolution, ecology, distribution, breeding behaviour, variation, hybridization, cultivation and garden history. In addition there are introductory chapters on the history of the exploration and cultivation of the genus, on cultivation, on the evolutionary history of primula, and its special features.