chryseobacterium arachidis chryseobacterium arachidis chryseobacterium arachidis is a gram-negative and rod-shaped bacteria from the genus of chryseobacterium which has been isolated from a rhizosphere environment. chryseobacterium arachidis scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: weeksellaceae genus: chryseobacterium species: c. arachidis binomial name chryseobacterium arachidiskämpfer et al. 2014 type strain 91a-593, ccm 8489 t, lmg 27813