Your plant must be somewhere on some database. In my mind (which could very easily be wrong) it seems your plant must have a name, if it was a hybrid or cross breed, I would think that it would reproduce variable plants. It seems like all of your plants are consistently the same with the same leaf, flower, etc.
On another note, the fact that you said your plant has a sweet scent keeps coming up in my mind. What could it be? Inquiring mind wants to know.