blastococcus colisei blastococcus colisei blastococcus colisei is a gram-positive bacterium from the genus of blastococcus which has been isolated from limestone from the amphitheatre of el jem in el jem, tunisia. blastococcus colisei scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: geodermatophilales family: geodermatophilaceae genus: blastococcus species: b. colisei binomial name blastococcus coliseihezbri et al. 2017 type strain cect 8823dsm 46837bmg 822