Oxalis corniculata, the creeping woodsorrel, procumbent yellow sorrel[2] or sleeping beauty, is a somewhat delicate-appearing, low-growing herbaceous plant in the family Oxalidaceae.

The flowers close when direct sun is not hitting the plant, hence the name "sleeping beauty".

A drink can be made by infusing the leaves in hot water for about 10 minutes, sweetening, and then chilling.

[9] The entire plant is rich in vitamin C. Any woodsorrel is safe in low dosages, but if eaten in large quantities over a length of time can inhibit calcium absorption by the body.

Indigenous peoples of Taiwan frequently grow this plant (known roughly as p-r-səʔ) as a cure for snakebites and scabies.