Durik-durik (Syzygium sp.) is one of the plants in the floodplain ecosystem in the Kajuik Lake, District of Langgam, Pelalawan, Riau Province. The analysis of durik-durik (Syzygium sp.) from Riau has been done using a DNA barcode namely rpl16 intron. The methods included sampling, total DNA extraction using Genomic DNA Mini Kit Plant (Geneaid), Polymerase Chain Reaction (PCR), electrophoresis, …