Table 3.

Data of interspecific and intraspecific distances of the related species.

Parameter	Range
Intraspecific distances of Is. tinctoria	0.000~0.027
Intraspecific distances of P. tinctorium	0.000
Intraspecific distances of S. cusia	0.000~0.036
Interspecific distance among the above three species	0.401~0.684
Interspecific distance between Is. tinctoria and its adulterants	0.514~0.684
Interspecific distance between P. tinctorium and its adulterants	0.025~0.755
Interspecific distance between S. cusia and its adulterants	0.065~0.931