Morning Glories: Need help IDing some Grays, 1 by bluespiral

bluespiral wrote:
This one was labeled, I. nil 'Shibori'. When I key in that name in a PlantFiles search, I get Fujishibori, which is very different. Is this I. nil 'Shibori' a proper cultivar in its own right, too?

Here's how it looked in my garden last summer. This is not its best picture, but I want to show the two very different flowers that both appeared on the same vine. As the season got older, the type of bloom on the left became more predominant - it did not show up at all earlier in the season.