chryseobacterium rhizosphaerae chryseobacterium rhizosphaerae chryseobacterium rhizosphaerae is an bacterial species found in the rhizospheres of coastal sand dune plants. it is gram-negative, non-spore-forming and non-motile. its type strain is rsb3-1t (=kctc 22548t =nbrc 105248t). chryseobacterium rhizosphaerae scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: weeksellaceae genus: chryseobacterium species: c. rhizosphaerae binomial name chryseobacterium rhizosphaeraecho et al. 2011