was used to generate PCR products from herbarium specimens according to the manufacturer’s instructions.
To extract DNA,a small piece of specimen was incubated in 20 ml dilution buffer at room temperature for 3 min,
and then 1.5 ml of the supernatant were used as a template for a 50 ml PCR reaction.
LSU-rDNA region was amplified with primer pair LR0R and LR7