This book publishes for the first time data for Siberia on taxonomy, chorology, and ecological adaptations of the species of one of the largest families of dicotyledons, i.e. Leguminosae. These form 27 genera and 351 species and subspecies. Four new species have been described. Maps of plant distribution have been presented for most of the species and many have been illustrated. "Flora Sibiri [Flora of Siberia]" has been published in 14 volumes. This book is meant for botanists specializing in various branches including resources specialists, specialists in natural conservation, plant introducers, teachers and students of biological faculties, and regional specialists. Key to Genera: Sophora L.; Lespedeza Michaux; Sphaerophysa DC.; Caragana Lam.; Astragalus L.; Subgenus Phaca (L.) Bunge; Subgenus Astragalus; Subgenus Hypoglottis Bunge; Subgenus Trimeniaeus Bunge; Subgenus Calycophysa Bunge; Subgenus Cercidothrix Bunge; Subgenus Calycocystis Bunge; Oxytropis DC.; Subgenus Phacoxytropis Bunge; Subgenus Oxytropis; Subgenus Traganthoxytropis Vass.; Subgenus Triticaria Vass.; Subgenus Physoxytropis Bunge; Gueldenstaedtia Fischer; Glycyrrhiza L.; Hedysarum L.; Onobrychis Miller; Lotus L.; Coronilla L.; Vicia L. Lathyrus L.; Lens Miller; Cicer L.; Ononis L.; Melilotus Miller; Trigonella L.; Melilotoides Heist. ex Fabr.; Medicago L.; Trifolium L.; Thermopsis R. Br.; Lupinus L.; Chamaecytisus Link.; Genista L.; and Halimodendron Fischer ex DC. It talks about new Species for Siberia and new Taxa. It contains maps of plant distribution, and an index of Latin names of plants.