1st » Publication of 'Species Plantarum' by Carolus Linnaeus known as Linnaeus, and the formal start date of plant taxonomy adopted by the International Code of Botanical Nomenclature.
Famous Birthdays on May in 1753
8th » Miguel Hidalgo y Costilla Mexican priest (d. 1811)
13th » Lazare Carnot, French general, mathematician, and politician (d. 1823)
31st » Pierre Victurnien Vergniaud, French lawyer and politician (d. 1793)