I think it's a just a plan Dutchman's pipevine. Maybe Aristolochia gigantea? I can't be sure of the species because it didn't come with a tag. If you grow it, you have to take responsibility for the Pipevine cats that lay on it so I don't generally recommend it. Mine is growing kind of weird. It's technically planted in a raised bed with a trellis on one side that is located next to my fence. So it has found the fence and grown up and through it. I think it gets hit by the sprinklers once or twice a week depending on the law at the time. It's in partial shade with mostly morning sun exposure. We grow this same species at MOSI in full sun, poor sandy soil and regular irrigation. I think it must be pretty adaptable, especially once you get it settled in.
No need to call out the search party. I'm too tired for partying, anyway.
