T. pyrumvarieties Locality Latitude and longitude Number of samples
var. obtusa MudasalOdai 11°29'07.74" N 79°46'28.10" E 43
Nagapattinam 10°45'37.94" N 79°50'57.82" E 57
var. acuta Rameshwaram 9°16'49.46" N 79°19'02.44" E 77
Punnaikayal 8°38'15.20" N 78°07'13.63" E 23
var. globosa Arogyapuram 8°07'10.76" N 77°33'32.25" E 40
Colachel 8°10'20.67"N 77°14'56.42" E 60
Total 300
Table 1: Summary of locality and number of chanks sampled.