It's unlikely "Colombine" will be confused with any another scented violet in a couple of ways.  First, this violet has sky-blue flowers with an ivory center and couldn't be prettier.  It was probably a cross between "Czar" and a form of "Quatre Saisons."  Second, it has a different growth habit from most of the others.  By that, I mean it always seems a bit haphazard to me, but that's what makes it unique.  (Casbas, France, 1991)