I just couldn't find the tag around and I kind of forgot what species I have.
Can anyone identify this Japanese tree peony?
A guessing game? I'm in! Does this sound familiar? Shin Shichifukujin
Here is a link that might be useful:
The only pink ones I had were Kamata fuji, and Yaezakura so it has to be one of those.
Steve, it is a cultivar rather than a species. If you did a search for both cultivar's the closest is Yaezakura since it is a pink and Kamata Fuji is a lavender purple. However, Yaezakura is normally a light cherry blossom color so you may not even have it. Of course pictures do not always show true colors.