Guessing Kalanchoe pinnata, AKA Bryophyllum pinnatum.

Can't comment on medicinal qualities.

This post was edited by dave_in_nova on Wed, Feb 19, 14 at 10:04

As to medicinal qualities, I found a scientific paper that says, "Our findings show that K. pinnata flowers are a rich source of T-suppressive flavonoids that may be therapeutically useful against inflammatory diseases."

The Wikipedia entry listed several uses in traditional medicine.

You couldn't pay me to eat it, though.