Hi Fermi,
I have one seed accession of Acis tingitana. They are quite variable in plant height and flower size. I have attempted to self the flowers several times without success. During January of this year, I hand cross pollenated the flowers and have a good crop of seed that I just planted. Some of the resulting seedlings can be tested in the open garden and some tested at our El Dorado county farm for cold hardiness.
Currently I am out several generations with Acis autumnale and A. rosea. With Acis rosea I am breeding for enhanced pink coloration. I have one blooming accession of Acis nicaeensis and hope to cross pollenate them this coming spring. Results are slow.
I also grow several clones of Tulipa clusiana. Currently I am developing a new site where it will be easier to work with them. To date, I have no results to show for my efforts with them. Hopefully the new site will change this situation. According to Jepson's Tulipa clusiana has naturalized at a site near Riverside, California. They do produce seed easily here in Sacramento.
'White Marvel' is a nice N. triandrus hybrid. I enjoy working with Nacissus triandrus. I will likely have a new crop of blooming hybrids this spring. Maybe something good will show up.