I might have a plant--I'm still figuring out what to do with it. Right now, it lives at my mom's, and I don't think she's particularly attached to it. I/we have had it a couple years and it hasn't bloomed yet. It did have small buds at one point, but it lost them, probably due to inadequate watering. I think it might make sense for my mom to replace it with something more interesting. However, I give her a lot of plants, and in general she wants fewer, not more. It was actually supposed to be at my mom's temporarily, and go to my sister. However, my sister is pretty anti-plant at the moment. I do think it should go in the ground, as our climate is very similar to where it's from. So the fate of this plant is uncertain.
I'm not convinced A. chilensis is the best choice of an Aristolochia for kids. There was a post on one of the Aristolochia forums asking whether anyone had success with the plant. One of the best growers in the world showed a picture of a tiny bud and said "I still have reason to hope". A. fimbriata is the most reliable bloomer I've grown. It's small, cute, odd. But small... It also makes tons of seeds. Certainly some of the others are more dramatic, including A. gigantea and A. macroura. I think how long they would take to bloom depends a lot on one's conditions. A friend bloomed A. gigantea in her apartment in Boulder, so they can bloom in surprising environments.
I just started a large number of cuttings of A. macroura (already rooting) and I have seedlings (tiny) of A. chapmanii (I've been told those are actually not A. chapmanii, as claimed by Butterfly World), seeds of A. fimbriata (from my plant, last year), possibly cuttings of A. gigantea, and then the possible A. chilensis.
I would be cautious about trading for A. chilensis seeds unless there's strong evidence they are viable. I think there are a lot of inviable seeds out there. My plant was originally from Annie's Annuals.
Here's A. macroura, although I don't know whether the clone I currently have is the same:
And one of the forms of A. gigantea. If I can spare a cutting, I think it would more likely be a small one, from an A. gigantea brasiliensis seedling.
These can get 10 inches or so. It's the clone a friend bloomed in her apartment.