This book aims to fulfil this long felt need giving details of ex-situ conservation of 20 arid species. Each chapter has information on taxonomic citation, physiognomic description, uses of these species, threats faced and its regeneration protocols. The presentation with large number of coloured photographs is in question answer style to increase the readability so as to get across the wide spectrum of conservation fraternity. This book will be useful to the students, teachers and researchers engaged in conservation biology, forestry, horticulture, plant ecology, agroforestry and desertification control programmes.