Staphylococcus chromogenes

Staphylococcus chromogenes is a Gram-positive, coagulase-negative member of the bacterial genus Staphylococcus consisting of clustered cocci. The species is associated with mastitis in dairy animals.

S. chromogenes can be a coagulase-variable Staphylococcus sp., with rare but individual populations displaying clotting activity.