Hello,
I may be able to supply seed of several forms of L.sempervirens, dioica, and flava. I know the last two are not listed, but flava is the best of the US native species with a sweet fragrance. I also have fragrantissima, standishi, and the hybrid from them, purpusii, but I rarely get fruit on them.
Contact me off list.
Aaron Floden
Knoxville, Tennessee