I seem to remember a while back a discussion about K Diagremontiana. Seems there was a difference between that and another Kalanchoe. One had a small "lip" at the base of the leaf and the other did not. That was how you could discern which was who?? Unfortunately my rusty sieve brain can't remember the name of the Kalanchoe...just that there was a lot of confusion and it was determined that they were two different plants. I am pretty sure that was on the DG site.
