Final answer:
Staphylococci are gram-positive cocci, which form grape-like clusters and are well-documented for causing various infections, notably by the species Staphylococcus aureus.
Step-by-step explanation:
Staphylococci are gram-positive cocci that resemble irregular clusters similar to grapes. This description fits perfectly with the appearance and characteristics of the genus Staphylococcus. Notably, Staphylococcus aureus is a well-researched species within this genus, known for causing a variety of skin infections and other medical conditions. Staphylococcus is part of the Bacilli class in Bergey's Manual, although they are coccal (spherical) rather than rod-shaped like the Bacillus genus.
Staphylococci are irregular Gram-positive cocci (bacteria with a spherical shape) that form cluster-like grapes. The name Staphylococcus actually comes from a Greek word for bunches of grapes, which describes their microscopic appearance in culture. Under the microscope, Staphylococcus species have cellular arrangements that form grapelike clusters. This is in contrast to Gram-negative cocci, which do not have this characteristic arrangement.