Some info..
http://www.cssainc.org/index.p...
Schlumbergera orssichiana .. leaf edges too jagged.
http://cactusepiphytes.pagespe...
http://www.google.co.uk/search...
schlumbergera kautskyi .. not a match
http://schlumbergera.net/speci...
Schlumbergera opuntioides .. definitely not a match!
http://schlumbergera.net/speci...
Schlumbergera russelliana .. doubt it.
http://schlumbergera.net/speci...
Schlumbergera truncata .. jagged edges.
http://schlumbergera.net/speci...
Schlumbergera microsphaerica .. jagged edges.
Look at other genera.. Hattiora .. none match.
http://hatiora.net/
Epiphyllum .. possible!
http://www.f-lohmueller.de/cac...
I've looked at examples of about all the other genera in Cactaceae and can't find anything else so it's probably an Epiphyllum hybrid.
http://floradobrasil.jbrj.gov....
http://www.google.co.uk/search...
