alkalibacillus filiformis alkalibacillus filiformis alkalibacillus filiformis is a gram-positive, haloalkaliphilic and non-motile bacterium from the genus of alkalibacillus which has been isolated from water and mud from malvizza, montecalvo irpino, italy. alkalibacillus filiformis scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: bacillaceae genus: alkalibacillus species: a. filiformis binomial name alkalibacillus filiformisromano et al. 2005 type strain 4ag, atcc baa-956, cip 109217, dsm 15448, jcm 13893