lactococcus laudensis lactococcus laudensis lactococcus laudensis is a gram-positive and non-spore-forming bacterium from the genus lactococcus which has been isolated from raw cow milk from val trompia in italy. lactococcus laudensis scientific classification domain: bacteria phylum: bacillota class: bacilli order: lactobacillales family: streptococcaceae genus: lactococcus species: l. laudensis binomial name lactococcus laudensismeucci et al. 2015 type strain dsm 28961, lmg 28353, strain 4195