caenispirillum caenispirillum caenispirillum is a bacterial genus from the family of rhodospirillaceae. caenispirillum scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodospirillales family: rhodospirillaceae genus: caenispirillumyoon et al. 2007 type species caenispirillum bisanense species c. bisanense c. deserti c. humi c. salinarum