

I am not a taxonomist so I'm not going to challenge the name of this plant but I will observe that the Clematis heracleifolia that I am familiar with typically grow to twice that height, have larger (2x?) flowers that are almost all a darker blue color, and spread by rhizomes. Their flowers also have, what I consider to be, a delightful perfume. On the downside they tend to lodge, or flop because of their height. Their stems just aren't rigid enough to hold them upright. Still, they are wonderful plants in the right place.
Regardless of the names, Larry's collection has at least two very useful traits: they don't spread by rhizomes, and they stay compact and upright. They're in full flower right now; small grouping so of them abut the China Valley Path midway down the valley.