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 63
Yamato Tsukasa. (Origin unknown.) Bright rose.
YAMATO TSUKASA (Origin unknown) Jap. - Pink - Midseason. Bright rose. M. Wassenberg 1954 catalog.
