Schlumbergera x buckleyi (MreT) Tjad
1966/NCSJ 21: 93. B: 05496 Epiphyllum buckleyi MreT 1852/GComp
1852: 41. LT (Hunt 1995/SPR 4: 80): Moore, l.c., fig. 3, based
on a living plant raised at Tooting, England, by W Buckley (S.
russelliana x S. truncata). Distr: Definitely known only in cultivation,
but possibly spontaneous where the parental species are native.
Branch segments flattened, oblong or obovate, truncate, 2-4.5
x 1.3-2.5 cm, obliquely crenate; areoles apical and marginal,
in the notches between the crenations; flowers slightly zygomorphic,
5.5-6.5 x 3-4 cm; pericarp ribbed; hypanthium 3-4 cm; perianth
somewhat oblique; tepals spreading to recurving; stamens and style
long-exserted; stigma purple.
Intermediate between the parental species. For a full account
see McMillan & Horobin l.c. Probably the most frequent hybrid
cactus in horticulture and included here for that reason. Other
interspecific garden hybrids are: S. xexotica Bthl+Rauh 1977/
KuaS 28(12): (S. truncata x S. opuntioides) and S. xreginae McM
1985/Epi. 9(33): (S. truncata x S. orssichiana).