In the Saunders time 'Otto Froebel' was classified as form of P. officinalis, but now it is considered as form of P. peregrina.

Otto Froebel

X

Decora Alba

043

= Saunders No. 11644-11677





11660 = Diantha

Otto Froebel

X

Decora Alba F2

044

= Saunders No. 15716-15766

PER

X

Decora

045

= Saunders No. 8875

More information on this topic can be found in the following publications:

Silvia Saunders: The Work of Professor A.P. Saunders pp. 40-61 in: Wister JC (ed),1962,The Peonies. 2nd Printing 1995, American Peony Society: OFF X decora alba

Silvia Saunders: A.P. Saunders nursery catalog 1965