Vijayasankar ji and Tanay
It would be interesting to confirm that both Kachaloo and Arvi come from Colocasia esculenta. Y j Nasir in Flora of West Pakistan No. 120, 1978 has mentioned Kachalu (page 7) coming from Colocasia esculenta and Arvi or Arbi (page 8) coming from Alocasia macrorhiza. There must be some confusion somewhere.
Dr. Gurcharan Singh
Retired Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297 Mob: 9810359089