origination:
Peonies, The Manual of the American Peony Society, edited by James Boyd © 1928 American Peony Society: [Check List of Chinese Peonies in Commerce] Double Peonies, page 47.
Nimbus. (Andrews, 1923.) White. Not yet in general commerce.
NIMBUS (Andrews, 1923) - Double - White - Late to very late. Rose type, color white, deepening at center to palest blush buff; calyx and outer petals greenish. Strong erect, free bloomer. Bulletin 22. NIMBUS (1923) - Double, late. Full deep flower of palest rose fading white. Tall. A very distinguished flower.
Cathy A. Coon (2003)
