The Staphylococcaceae are a

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Gram-positive In bacteriology, gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify bacteria into two broad categories according to their type of cell wall. Gram-positive bact ...

bacteria Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were am ...

that includes the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

Staphylococcus ''Staphylococcus'' is a genus of Gram-positive bacteria in the family Staphylococcaceae from the order Bacillales. Under the microscope, they appear spherical ( cocci), and form in grape-like clusters. ''Staphylococcus'' species are faculta ...

'', noted for encompassing several medically significant

pathogens In biology, a pathogen ( el, πάθος, "suffering", "passion" and , "producer of") in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a ger ...

. The five genera ''

Jeotgalicoccus ''Jeotgalicoccus'' is a genus of Gram-positive, facultatively anaerobic, and halotolerant to halophilic bacteria. The cells are coccoid. The genus is named after the Korean fish sauce jeotgal ''Jeotgal'' () or ''jeot'' (), translated as sal ...

'', '' Macrococcus'', ''

Nosocomiicoccus ''Nosocomiicoccus'' is a genus of gram-positive cocci. The name is derived ''nosocomium'' - hospital; ''coccus'' from Greek noun ''kokkos'' - a coccus a grain, berry: ''Nosocomiicoccus'' - a coccus isolated in a hospital. The genus was erected i ...

'', ''

Salinicoccus ''Salinococcus'' is a genus of Gram-positive cocci belonging to the family Staphylococcaceae. The genus name is derived from Latin ''salinus'' - saline, and Greek ''kokkos'' - a grain or berry A berry is a small, pulpy, and often edible fru ...

'', and ''Staphylococcus'' have been shown to be monophyletic, while ''

Gemella ''Gemella'' is a genus of Gram-positive bacteria that thrive best at high partial pressure of CO2. Description A Gemella species was first described as Neisseria hemolysans in 1938. It was reclassified as a new genus in 1960 when strains wer ...

'' appears to be polyphyletic. The pathogen methicillin-resistant ''Staphylococcus aureus'' is a member of this family.

References

Bacillales Bacteria families {{Staphylococcaceae-stub