Sacha writes
We have a Christmas cactus type that is flowering now, very
prolifically. Ray brought it into the house yesterday and it's on an
east facing window sill, which isn't curtained. What we're wondering
is which variety it is and perhaps Kay - or others - will recognise the
description. The colour is a pinky coral with some light pink
coloration towards the base of each flower. But what is interesting is
that the flowers are double - a sort of hose-in-hose arrangement, for
want of a better description. Anyone know this?

That sounds about standard flower shape for Zygocactus (Schlumbergia).
And mine are in flower now, as are my father's.

Can't help on varieties - they're not one of my enthusiasms.

--
Kay