Shirakawa-gengo Believed Extinct

Chinka Zufu, (before 1700), Watanabe, 1969, pl.113: Large, white, single with central stamen cluster, white filaments, yellow anthers. Originated in Japan. See: Kyōto Engei Kurabu, 1963, Tsubaki Tokushū, No.4, p. 100. (Believed extinct.)