Peonies, The Manual of the American Peony Society, edited by James Boyd © 1928 American Peony Society: [Descriptive List of Chinese Peonies]:
PURPLE CUP. (Secor, 1924.) 9.0 (1 vote).* Single type; early. Red.. This meager description from the introducer is all the information obtainable.
PURPLE CUP (Secor, 1924) - Single - Red - Early - Midseason.
