Hi Billyhubb!
Kalanchoe mortagei is a synonym for
Kalanchoe (Kalanchoe poincarei)
I don't grow Kalanchoe but I'd think your plant would require about the same care as other Kalanchoe's:
http://garden.org/plants/searc... and most succulent type plants requiring a location with a lot of bright light to full sun; a well draining potting medium that doesn't retain a lot of water (which would cause root rot) and minimal regular watering.
Hopefully someone who grows these beauties will pop in with some additional advice for you.
Lin