This year I have added Akashigata, and Prairie Star to my root collection. Courtesy of the CPS Root Sale.
Akashigata picture from Blossomhill Nurseries http://www.blossomhillnursery.com/
Prairie Star picture from La Pivoinerie D'Aoust http://www.paeonia.com/
I have also added Starlight supplied by Parkland Perennials. All were excellent root size with more than 5 eyes. I look forward to seeing there blooms for years to come.
Starlight picture from Parkland Perennials http://www.parkland-perennials.com