We propose the name for a new species of gram-negative, rod-shaped, motile bacteria that were nonhemolytic on blood agar and were isolated from clinical sources. The 10 strains of were incapable of liquefing gelatin. They grew at 10°C but not at 41°C, produced fluorescent pigments, catalase, and cytochrome oxidase, and possessed the arginine dihydrolase system. They were capable of respiratory but not fermentative metabolism. They did not hydrolyze esculin or starch and were able to use benzylamine, α-aminobutyrate, -ribose, -arabinose, butyrate, valerate, isovalerate, isobutyrate, inositol, phenylacetate, -alanine, and amylamine. They possessed -phenylalanine arylamidase, -lysine arylamidase, -alanine arylamidase, γ-glutamyl-transferase, glycyl -phenylalanine arylamidase, -tryptophan arylamidase, glycyl--alanine arylamidase, esterase C, esterase C, esterase C, esterase C, esterase C, and esterase C. DNA relatedness studies revealed that strains formed a homogeneous DNA hybridization group. A total of 57 strains representing previously described or partially characterized taxa belonging to the genus were 6 to 54% related to . The highest hybridization values were obtained with strains belonging to or related to biovar A. The average G+C content of the DNA was 60.5 ± 0.5 mol% for four of the strains studied. The type strain of is CFML 90-60 (= CIP 104883); it was isolated from bronchial aspirate and has a G+C content of 60 mol%. The clinical significance of these organisms is not known.


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