Legionella cardiaca
Legionella cardiaca is a Gram-negative , non-spore-forming , aerobic , rod-shaped bacterium from the genus "Legionella" . 
<triplet> Gram-negative <subj> bacterium <obj> subclass of <triplet> rod-shaped <subj> bacterium <obj> subclass of <triplet> Legionella <subj> Gram-negative <obj> Gram staining