Trees with bright yellow bellshaped flowers present a gorgeous sight when in full bloom.
It blooms several times throughout the year. Naturally it comes to mind that these may be used as ornamental tree to beautify the campus avenue. Experts may recommend which of these will be more suitable in our climate.
About a month back I put up a photo of 4m high tree in bloom for ID. It was first identified by Giby ji as T. stans. Soon followed a lively discussion and participation by many. It is stated that though flowers look similar the cousin brothers have a big difference. T. stans has a compound leaf while the other has simple leaf. I went to the location in Kolkata, found leaves are opposite and compound trifoliate. As per PIER's description for T. stans " Leaves opposite, pinnately compounded, leafllets 1-9, usually 3-7 ". this then should be T. stans.
In the meantime Giby ji went to the library and found key to Tecoma Cf 'Flora of Udupi' by K.G.Bhatt
Leaves simple or 2-3 foliolates - T. castanifolia(syn. T. gaudichaudii)
Leaves 5-13 foliolates - T. stans.
Thanks to his perseverance our knowledge has expanded, but it makes the matter open