I'll gladly send you my list if you have any to share.

Yes, all of the photos that I post are from local plants. I was lucky to find this one close to the ground, since it was growing on a young Juniperus virginiana specimen, instead of in the top of a large tree.

Hello! I’m looking to cover the entire back wall of a detached three car garage with crossvine. Northeast exposure. Should I go with Jekyll or Tangerine Beauty? Another variety? Thanks so much!!

It may not seem consistent to say you can propagate crossvine by sowing seed and yet it doesn't spread aggressively by self seeding in nature. But it is. We propagate many plants by deliberate and careful seed sowing which don't naturally spread much that way. In the wild there are numerous barriers to seed success. And even if a plant does self sow, that doesn't make it invasive, or an aggressive spreader, which is what I think you are meaning. Normal gardening activity controls self sowing in a cultivated setting. "BTW, nearly all plants do NOT drop seeds." I don't really understand this statement. Can you explain what you mean? All flowering plants, other than artificially produced sterile cultivars, set and drop seed. Otherwise there would be no point in their having flowers.