Pseudomonas
Pseudomonas is one of the earliest found bacteria. It was first called 'Bacterium aeruginosm' by Schroter in 1872. However, in 1894, German botanist Walter Migula classified it as Pseudomonas aeruginosa. In Greek, pseudo means false and monas means “unit”. This bacteria is associated with many chronic infections and is considered dangerous due to its resistance to many antibiotics. There has been an increase in the number of species discovered year by year. In 2013, 10 species have been found and 6 more in the subsequent year. Pseudomonas was well-classified 100 years later by a Canadian scientist, Roger Stanier.  The classification was based on the physiological and biochemical properties.