Species Plantarum, authored by Carl Linnaeus and published May 1, 1753 in Stockholm, enumerated every known plant species with binomial names, descriptions, synonyms, and distribution. Two volumes covered about 5900 species. International Code of Nomenclature for algae, fungi, and plants designates this publication date as official starting point for valid plant names, meaning earlier names are not considered validly published. Similarly, Systema Naturae 10th edition 1758 serves as starting point for animals. This anchor stabilizes nomenclature worldwide. Such details are high-yield for NEET and CUET as they link morphological classification with modern molecular phylogeny insights.
Ref:
ICN Principle III Starting Points 1753; Lindman, Species Plantarum Introduction, NHM London Archives