Pot of Colour.

While my wife was in hospital recently undergoing surgery, someone gave her this potted plant instead of a bunch of flowers.
After her discharge we took it home still in full colour while most of the other flower bunches she received had virtually finished.
It lasted in flower for a long period finally succumbing to its inevitable demise. I cut it back to ground zero and left it outside meaning to discard it in due course.
It was an extraordinary surprise to see what happened next.

See for yourself. Does anyone knows its botanical name?