chryseobacterium contaminans chryseobacterium contaminans chryseobacterium contaminans is a gram-negative and rod-shaped bacteria from the genus of chryseobacterium which has been isolated from a rhizosphere contamination from an agar plate in alabama in the united states. chryseobacterium contaminans scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: weeksellaceae genus: chryseobacterium species: c. contaminans binomial name chryseobacterium contaminanskämpfer et al. 2014 type strain c26, ccm 8492, lmg 27810