Staphylococcus cohnii

An aerobic gram-positive coccus that produces either a smooth white colony or a brilliantly pigmented colonies with alternating rings that can be yellow-orange, gray, gray-white, orange or gray. It does not produce free coagulase, bound coagulase or hemolysins. It is part of the normal flora of the skin, skin glands, anterior nares, and mucous membranes of humans and animals especially primates. Rarely an opportunistic pathogen for humans causing urinary tract infections, wound infections, endocarditis, and septicemia.

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