Milkweed/Asclepias seeds?

Hello...

I am looking for any Asclepias seeds OTHER THAN these species... can anyone help me out?

Asclepias asperula
Asclepias curassavica
Asclepias exaltata
Asclepias incarnata
Asclepias purpurascens
Asclepias speciosa
Asclepias syriaca
Asclepias tuberosa

Those are the ones I have... other than that, I'd be interested in any other types.

Thanks in advance!
God bless,
Jeff