Purple Shamrock, Oxalis Triangularis – Plant

Oxalis corniculata, the creeping woodsorrel, also called procumbent yellow-sorrel or sleeping beauty, resembles the common yellow woodsorrel, Oxalis 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 petiole.

Uses

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

The leaves contain oxalic acid, which gives them their sharp flavor. Perfectly all right in small quantities, the leaves should not be eaten in large amounts since oxalic acid can bind up the body’s supply of calcium leading to nutritional deficiency. The quantity of oxalic acid will be reduced if the leaves are cooked. People with a tendency to have rheumatism, arthritis, gout, kidney stones, or hyperacidity.