Peonies, The Manual of the American Peony Society, edited by James Boyd © 1928 American Peony Society: [Check List of Chinese Peonies in Commerce] Japanese Peonies, page 59.
Kaisairon. (Millet, 1926.) Tyrian-red. Not yet in general commerce.
KAISAIRON (Millet, 1926) - Jap. - Tryian-Red - M.
Rivière (1995):
'Kaisairon' /Millet/1926
Burkhardt (2007)
probable the cultivar is grown in Dublin under the name 'Kaiserine'
