Cotyledon undulata

{{Short description|Species of succulent}}

{{more citations needed|date=October 2013}}

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|image = Cotyledon undulata.jpg

|genus = Cotyledon

|species = undulata

|authority = Haw.

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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. Cotyledon undulata is perhaps the most widely grown Cotyledon.

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. The flowers are orange to yellow.