Actually the web is my friend here.
I looked up the old post and now remember what was going on, Brian responded that he had not heard of it, so i did a quick search for the latin name. Simple cut&paste research.
If it's not a zone 5 plant then I know it only by reputation, or that it's a really cool, or big tree that I got a kick out of on a travel contract; eg redood, willow oak, sweetgum.
I did not really have an opinion on hackberry (C. occidentalis) untill I worked with Brandon and the rest of his uncles crew durruing the big icestorm in KC. They rarely get anywheres near that big up here.