Taxonomic studies were carried out on yellow-pigmented bacteria which were found widely in paddy rice, fruit and other related plant materials, and they were included in Erwinia herbicola on the basis of flagellation and biochemical characteristics.Determination, nomenclature and relation to other allied bacteria of this species were discussed.Taxonomic position of the strains of Pseudomonas perlurida and Ps. tri folii, which were previously reported by the authors, was corrected.