This is the second part of the three volume set monograph Peonies of the World, a comprehensive taxonomic revision of the genus Paeonia. Part of Hong De-Yuan's extensive field work on the distribution of the genus Paeonia, and supported by the National Geographical Society, this book contains 356 colour photographs, taken from natural sites, covering all 32 species and 26 subspecies, accompanied with concise descriptions of morphology and distribution.