I also think this is *Solanum wrightii *or commonly known as Potato tree. Kindly see the link below you will find the colour changing phenomenon of the flowers evident in photos.
http://toptropicals.com/catalog/uid/SOLANUM_MACRANTHUM.htm Tanay * * On Wed, Apr 6, 2011 at 4:42 AM, Gurcharan Singh <[email protected]> wrote: > Large blue flowers, tree, prickles only on stem not leaves, I think S. > wrightii. Please watch, older flowers should be turning paler and finally > white. > > > -- > 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 Wed, Apr 6, 2011 at 12:45 PM, Anantanarayan Rajaram < > [email protected]> wrote: > >> I saw the tree at Yellagiris in Tamil Nadu. Am I right in presuming that >> it is a Solanum sp. ? >> Height 20-25ft Flowers around 6cm across. Did not see any fruits.Thanks >> very much. >> Rajaram >> > > > > -- *Tanay Bose* Research Assistant & Teaching Assistant. Department of Botany. University of British Columbia . 3529-6270 University Blvd. Vancouver, B.C. V6T 1Z4 (Canada) Phone: 778-323-4036 (Mobile) 604-822-2019 (Lab) 604-822-6089 (Fax) [email protected] *Webpages:* http://www.botany.ubc.ca/people/mberbee.html http://www.botany.ubc.ca/people/gradstud.html https://sites.google.com/site/efloraofindia/

