This is an excellent book on the genus Sedum and its species. I bought this book new when it was first published and have used it often to identify Sedum varieties.
This book offers in-depth information of this genus, including diagrams of flowers and leaves for identification. It offers information on how to distinguish between species since many look so much alike. Also includes color photos.
Origin of plants, and preferred growing condition of each specie. Covers both hardy and tender species of Sedums. Everything you want to know about this genus is in this book.