Kalanchoes 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. Kalanchoe flowers are divided into 4 sections with 8 stamens. The petals are fused into a tube, in a similar way to some related genera such as Cotyledon.
“Butterflies are self propelled flowers.” ― Robert A. Heinlein
“a flower knows, when its butterfly will return,
and if the moon walks out, the sky will understand;
but now it hurts, to watch you leave so soon,
when I don’t know, if you will ever come back.”