Yes that’s the botanical name & the common name of our own “Nagalinga Poo”. Couroupita guianensis (Cannon Ball tree) or the Nagalinga poo is offered to Lord Shiva and has a very pleasant fragrance. This tree was found in the “Nandhavanam” or the garden of the Karaneeswarar Temple in Saidapet. Also read this interesting post about this tree / flower etc here.