Description of Plate.—A, twig with staminate and pistillate flowers; B, twig with pistillate flowers; C, fruit; 1-6, flowers and floral parts; 7-10, fruit and seed (nut).
THE ENGLISH WALNUT AND RELATED TREES.
(Juglans regia L.)
Children fill the groves with the echoes of their glee,
Gathering tawny chestnuts, and shouting when beside them
Drops the heavy fruit of the tall black-walnut tree.
—William Cullen Bryant: “The Third of November.”
The English walnut, butternut, black walnut, shagbark or shellbark hickory, mockernut or whiteheart hickory, bitternut hickory and pignut hickory are closely related, belonging to the butternut family, or technically the Juglandaceæ. They are large, handsome trees, with spreading branches and cleancut leaves. They are of comparative slow growth but hardy and enduring.
The English walnut is a tall, large, handsome tree which undoubtedly came from India. The name walnut is from Walish or Welsch nut; Juglans from Jovis glans, meaning the nut of Jove, and regia, meaning royal, hence the royal nut of Jove. The Greeks dedicated the tree to their chief deity Zeus, who corresponds to the chief deity of the Romans, namely, Jove or Jupiter. At a Greek wedding the nuts were scattered among the guests that Zeus might bless the marriage. The tree was described by numerous ancient writers, among others by Dioscorides, Plinius, Varro, Columella, and Palladius. Medicinal and other virtues were ascribed to the fruit and leaves and even to the shade of this remarkable tree. Arabian physicians used the hull of the unripe fruit and the leaves medicinally, Karl der Grosse (Charlemagne) recommended the cultivation of this plant in Germany about 812. It was introduced into the Mediterranean countries at an early period and extensively cultivated. From these countries it rapidly spread to northern Europe, and about 1562 it found its way into the British Isles, where it is extensively cultivated. It is cultivated somewhat in the United States.
All the other members of the Juglandaceæ are common throughout the United States, either growing wild or under cultivation. The wood of the butternut or white walnut and that of the black walnut is extensively used in cabinet making, furniture making and interior finish, particularly the wood of the black walnut. The earlier craze for black walnut furniture threatened to exterminate the plant, but fortunately (for the walnut tree) the fashion is waning. The wood is heavy, dark brown in color, of medium hardness, easily worked and readily polished, though it does not take the glossy polish of the harder woods, as ebony. Hickory wood is very hard, tough and durable, but it is not suitable for cabinet making, etc., because it warps too much. It is an excellent wood for making handles for tools of all descriptions, oxen yokes, hoops, walking sticks, whiffletrees, wagon stocks, etc. Its tensile strength is enormous, being said to be equal to that of wrought iron.
The seeds (kernels) of the English walnut, butternut, black walnut and shagbark hickory are edible and greatly relished, while those of the bitter and pignut hickories are not edible. Eating too many of the kernels causes distressing dyspeptic symptoms because of the large amount of oil which they contain. Salting the kernels before eating or taking a little salt with them is said to lessen these disturbances. The oil of these nuts is expressed and used as a salad oil and by artists in mixing pigments. The half-grown green fruits of the walnuts are pickled with spices and eaten, but as such relishes have never come into great favor. They are too severe in their action on the intestinal tract, due to the tannin, acids and coloring substances present. The hulls of these nuts are used in dyeing cloth; also the bark of the butternut and black walnut. The leaves and hull of the English walnut and the inner bark of the roots of the butternut are still quite extensively used medicinally. A decoction of the leaves is said to cure gout, scrofula and rickets. The hulls are recommended in gout and eruptive skin diseases. Fresh leaves are applied as a fomentation to carbuncles. The extract is used as a gargle, wash for ulcerous eruptions and taken internally in tubercular meningitis. The juice of the green hull has been extensively employed as a popular remedy to remove warts, as an external application for skin diseases, and internally as a stomachic and worm remedy. The medicinal virtues of these plants are, however, apparently limited and unreliable.