I don't know! I got bunches free from forum friends, and have not looked them all up. I believe most of mine are TB's, but I know for sure that there are a couple of medians and a space age or two that I planted, and a couple of teeny tiny ones. I am too new to Iris to understand all the different types yet. But as my iris bloom, and I see them in person, I will get them figured out. So next spring should be exciting! I can say for certain I have no Siberians though. ~ Jan