ATCC BAA-115 = CIP 105757 = DSM 21817 = HAMBI 2409 = LMG 18254 = SO2 = SO2 (The type strain has been deposited in the USDA ARS National Rhizobium Resource Center collection = USA = and in the Culture Collection of Centro de Investigación sobre Fijación de Nitrógeno at UNAM = Cuernavaca = Mexico. Accession numbers not given.)