Dregea volubilis from Delhi, was photographed growing over hedges and park fence, and was identified after a lot of discussion, some members initially suggesting species of Marsdenia but fruits finally clinching the issue. The plant, however, much more hairy than the plant uploaded by Dinesh ji as per the following link.
http://groups.google.co.in/group/indiantreepix/browse_thread/thread/37de1c444d0a7a1c/2db3237b0fa83036?lnk=gst&q=Dregea+volubilis#2db3237b0fa83036 -- 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/