Yes, the leaf is what let me know it was not I. quamoclit. Assuming you meant that your searching was done on COL, if you didn't find I. sloteri, then it shouldn't be an entry in the database here. It seems like they are the same plant, I. sloteri & multifida from the amalgam of pics I've seen, but having not observed either in person except by the most brief glimpses, I'm not in a position to gauge that at all. That is why I asked what the difference would be. These distinct leaves, and the small, typical Ipomoea blooms look the same to me:
But maybe there is another feature one could observe to see the difference, if there is one.