Members of Kalanchoe genus are characterized by opening their flowers by growing new cells on the inner surface of the petals to force them outwards, and on the outside of the petals to close them.
Species and varieties:
Kalanchoe x richaudii
Bryophyllum is a plant genus of the Crassulaceae family that has sometimes been included within the genus Kalanchoe. The group is notable for vegetatively growing small plantlets on the fringes of the leaves; these eventually drop off and root.