exiguobacterium alkaliphilum exiguobacterium alkaliphilum exiguobacterium alkaliphilum is a gram-positive, rod-shaped, facultatively anaerobic and alkaliphilic bacterium from the genus of exiguobacterium which has been isolated from alkaline wastewater drained sludge from new delhi. exiguobacterium alkaliphilum scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: bacillaceae genus: exiguobacterium species: e. alkaliphilum binomial name exiguobacterium alkaliphilumkulshreshtha et al. 2013 strains type strain - 12/1