Good morning Sir... thank you for the link and ID suggestion. The illustrated flower in the above link depicts longer corolla tube, thereby suggesting that my species might not be *R. rivularis*.
Regards, Surajit On Wed, Apr 11, 2012 at 1:14 AM, Vijayasankar <vijay.botan...@gmail.com>wrote: > Ruellia rivularis Schltdl. is a synonym of Hygrophila costata Nees as per > The Plant List. > And it looks completely different from the pictures posted here. Pl check > these links: > > http://plantgenera.org/illustration.php?id_illustration=44751&language=English > http://plants.jstor.org/specimen/mo-159501 > > This looks like a Dipteracanthus species to me. > > Regards > > Vijayasankar Raman > National Center for Natural Products Research > University of Mississippi > > >