This is the second part of the three-volume set Peonies of the World, a comprehensive taxonomic revision of the genus Paeonia. Based on Hong De-Yuan’s extensive field work and supported by the National Geographic Society, this book contains 356 color photographs taken from natural sites covering all peony species and subspecies, accompanied by descriptions of morphology and distribution. Peonies of the World will be the definitive guide to the species for growers, gardeners, and collectors.