I asked for and was given some cuttings from a plant at an antique
mall a couple of years ago. The mother plant looked vaguely like an
epiphyllum (orchid cactus) and I had hopes for some stunning flowers
from this one. The cuttings are doing well and the plant is
flourishing but no flowers as yet.

Pictures are at:

http://www.treadles.ca/website/plant/plant.html

Can anyone tell me what it is so I can find out how to care for it and
what kind of blooms, if any, to expect?

Circe in Canada