To me this looks very like Perilla frutescens and this is reinforced by the comment that it does not have a strong smell.
On Sunday, 16 December 2012 13:57:36 UTC, surajitkoley wrote: > > Sir, > > Found this herb yesterday on the edge of a agri-land. > > Species : UNKNOWN > H & H : wild herb, about 1.5 ft, leaves don't have any aroma > Date : 15/12/12, 2.43 p.m. > Place : Hooghly > > Thank you & Regards, > > surajit > > --

