SORREL, Rumex Acetosa, a member of the natural order Polygonaceae, a hardy perennial, native to Britain and found throughout the north temperate zone. The leaves are used in soups, salads and sauces. Sorrel grows freely in any good garden soil, and is increased by dividing the roots during the early part of spring. They should be planted in rows 15 to 18 in. apart. The leaves, when fully grown, are gathered singly. The common garden sorrel is much superior to the wild plant; but the Belleville, which is the kind generally cultivated near Paris, is still better, its leaves being larger and not so acid. The Blistered-leaved, which has large leaves with a blistered surface, has the advantage of being slow in running to seed. French Sorrel (Rumex scutatus) is a hardy perennial, distributed through Europe but not native in Britain, with densely-branched trailing stems. The leaves are roundish, heart-shaped and glaucous; they are more acid than those of the common sorrel.