I have got seeds of canarina canariensis, a flowering climber from campanula family native to canary islands. I would like to have red or pink mandevilla seeds in return or maybe lavender trumpet vine or solanum jasminoides or hardenbergia comptoniana.btw my complete have list is http://www.lahoregardening.com/p/seeds-have-list.html
PS: Being outside USA, i can send first and after getting from me, you can send my portion.
Have: Canarina canariensis
I have the plants you are wanting, but have never had mine set seed.