Such classification is called taxonomy or systematics . Plants are classified according to their structure, function, development and evolutionary history. The highest classification according to the Linaean system is the kingdom. According to internationally accepted rules, a species is always identified by two technical names. With plants, this is known as the botanical name or the species name.
Botanical names are in Latin and are used uniformly all over the world.
For example, a species of hedge roses is called Rosa multiflora . Such species names should always be either underlined or printed in italics and the first word, which always identifies the genus to which the species belongs, should be capitalized. They makes us look smarter and more scientific. They help keep lay people in a state of confusion. The common names vary considerably but the botanical names do not.