Bitter rattan is a clumping and climbing plant. The distribution area of bitter rattan ranges from lowlands to mountains with altitudes of 300-600 meters above sea level, in wet climates. DNA barcoding is a short sequence that can be used in DNA barcoding techniques. This research aims to analyze the DNA barcode sequences of rbcL and ITS from the bitter rattan plant (Calamus caesius Blume) from…