To confirm the registration of a Dendrobium hybrid & view its composition/progeny: (Database as at 1 January 2018 RHS registrations)
Den. Fancy Dress = Ginrei x Seigyoku Registration: 1990 by Yamamoto J.
Bonanza = Royal Pink 1997 Yamamoto J.
Fresh Girl = Cheek Dance 1997 Yamamoto J.
Matterhorn = White Ace 1997 Yamamoto J.