·Numerical Taxonomic Study of Fast-Growing Soybean Rhizobia and a Proposal that Rhizobium fredii Be Assigned to Sinorhizobium gen.nov. ·obium huakuii sp.nov.Isolated from the Root Nodules of Astragalus sinicus ·Characteristics of Rhizobium tianshanense sp.nov.,a Moderately and Slowly Growing Root Nodule Bacterium Isolated from an Arid Saline Environment in Xinjiang,People's Republic of China ·Rhizobium hainanense sp.nov.,Isolated from Tropical Legumes ·Identification of isolates from soybean nodules in Xinjiang Region as Sinorhizobium xinjiangense and genetic differentiation of S.xinjiangense from Sinorhizobium fredii ·Rhizobium indigoferae sp.nov.and Sinorhizobium kummerowiae sp.nov.,respectively isolated from Indigofera spp.and Kummerowia stipulacea ·Characterization of rhizobia that nodulate legume species of the genus Lespedeza and description of Bradyrhizobium yuanmingense sp.nov. ·Rhizobium yanglingense sp.nov.,isolated from arid and semi-arid regions in China ·Characterization of rhizobia isolated from legume species within the genera Astragalus and Lespedeza grown in the Loess Plateau of China and Description of Rhizobium loessense sp.nov. ·Diversity of rhizobia associated with Amorpha fruticosa isolated from Chinese soils and description of Mesorhizobium amorphae sp.nov.