Identification of Taraxacum formosanum contaminated with various ratios of adulterant’s genomic DNA using the LAMP method. The genomic DNA of T. formosanum and non-target DNA (genomic DNA of Ixeris chinensis) were mixed in the ratio 1:10 (lane 4), 1:50 (lane 3) and 1:100 (lane 2), respectively. Lane M, DNA marker; lane N, negative control (genomic DNA of Ixeris chinensis); lane 1, 130 ng genomic DNA of each species, Taraxacum officinale, Ixeridium laevigatum, Youngia japonica, Ixeris chinensis and Emilia sonchifolia var. javanica, were all mixed with 130 ng genomic DNA of T. formosanum into one sample.