During Presentation author tried to explain Plant Taxonomy, The International Code of Nomenclature for algae, fungi, and plants (ICN), DNA Barcodiing, The Angiosperm Phylogeny Group (APG), Advantage of DNA barcoding, Its Application, Barcode limitations and about Worldwide DNA Barcoding Community. DNA barcode is a short genetic sequence that can be used for biological species identification. With a possible nucleotide position of four nitrogenous bases (ATGC) at each site, there are 4n probable codes for any given sequence (‘n’ nucleotides long), making it possible to identify every taxon. The survey of just 15 nucleotide positions can identify up to one billion species. A region of approximately 648 bp of the mitochondrial gene cytochrome C oxidase 1 (COI) was initially proposed as the barcode source to identify and delimit all animal species while Two regions of the plastid DNA (matK and rbcL) have been recommended for terrestrial plants. DNA barcoding has been considered an efficient aid to traditional taxonomy. Taxonomy, for instance, is purely morphological i.e require proper description of the organism and not molecular while in barcoding, the use of molecular data in the discovery of new species. DNA Barcoding and taxonomy complement each other is also widely accepted by modern scientific community.