Kalanchoe daigremontiana

Bryophyllum daigremontianum, commonly called devil’s backbone, mother of thousands, alligator plant, or Mexican hat plant is a succulent plant native to Madagascar. Like other members of its genus Bryophyllum, it is able to propagate vegetatively from plantlets that develop on its phylloclade margins. All parts of the plant contain a very toxic steroid known as daigremontianin.