The main feature of distinction is calyx lobes. in I. indica calyx lobes are 10-20 mm long, ovate-lanceolate and long acuminate, pubescent or glabrous. In I. nil sepals are 15-25 mm long, narrowly lanceolate, tapering into long tip and more importantly long hirsute especially near base. In fact I. hederacea is very close to I. nil, but tips of calyx calyx lobes in fruit are straight in I nil, but curved to one side or recurved in I. hederacea.
-- 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 http://people.du.ac.in/~singhg45/ On Sun, May 29, 2011 at 2:15 PM, H S <[email protected]> wrote: > Yes sirji > even i get confuse between I. indica and I. nil.. flower look exactly > similar.. May leaves shape help.. > > regards > > > > - H.S. > > A scientific man ought to have no wishes, no affections, - a mere heart of > stone > >
