The twelfth volume of the illustrated lists of Plants of Central Asia (within the People's Republic of China and Mongolia) continues the description of flowering plants and covers the treatment of families Nymphaeaceae, Ceratophyllaceae, Ranunculaceae, Berberidaceae, Menispermaceae. Keys are provided for the identification of genera and species. For each species are given references to nomenclature, information on habitat and geographic distribution. Ill.: 8 plates, 4 maps of distribution ranges.