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068  Oxalis corniculata L.

Ossalidaceae

Nome comune: Acetosella dei campi

Creeping Woodsorrel (Oxalis corniculata), also called Procumbent Yellow-sorrel or Sleeping Beauty, resembles the Common Yellow Woodsorrel (O. stricta). It is a somewhat delicate-appearing, low-growing, herbaceous plant in the family Oxalidaceae. It has a narrow, creeping stem that readily roots at the nodes. The trifoliate leaves are subdivided into three rounded leaflets and resemble a clover in shape. Some varieties have green leaves, while others, like Oxalis corniculata var. atropurpurea, have purple. The leaves have inconspicuous stipules at the base of each petioles. The fruit is a narrow, cylindrical capsule, 1 to 2 cm long and noteworthy for its explosive discharge of the contained, 1 mm long seeds. The leaves of wood sorrel are quite edible, with a tangy taste of lemons. A drink can be made by infusing the leaves in hot water for about 10 minutes, sweetening and then chilling.[3] The entire plant is rich in Vitamin C. Although any wood sorrel is safe in low dosages, it must be noted that if eaten in large quantities over a length of time it can inhibit calcium absorption by the body.[3] In India, where the plant is known as chichoda bhaji (approximately "earthalmond greens"), it is only eaten seasonally, starting around December.