Cotyledon undulata, also known as silver crown or silver ruffles, is a small succulent shrub up to 50 cm tall.

It has unusual grey undulating leaves that give it a very sculptural shape.

The stems are covered with a thick, white, coating.

The leaves are shaped like scallop shells, grey-white to blue-grey, with wavy edges and a powdery waxy coating over the whole leaf.

This Crassulaceae-related article is a stub.