Plant Identification: CLOSED: Supposedly a Heliotrope...I have my doubts, 1 by gardenwife

gardenwife wrote:
A friend gave me starts of this plant. She says it's an old garden plant from her mother's garden and claims it's Heliotrope. It's perennial here in zone 5 and appears to spread by rhizome. It grows 4' high and has highly fragrant white flowers which bloom in early May...

But this looks nothing like the Heliotrope I've bought at the local nursery (see picture on right). I know there are some 250 in the genus, but this just looks sooo different! Is this gift plant Heliotrope? If so, do you know what variety it might be? I can post photos of its bloom if this big plant's bloom doesn't poop out on my from transplant shock!