Besides the Black-fruited Mulberry, there are four other species sufficiently hardy to bear our climate without protection; but it will be here sufficient to give a short account of the White-fruited (M. alba) as the next best known, and as the species whose leaves are used in feeding silk-worms. M. alba, is only found truly wild in the Chinese province of Seres, or Serica. It was brought to Constantinople about the beginning of the sixth century, and was introduced into England in 1596, where it is still not very common. In the south of Europe it is grown in plantations by itself, like willows and fruit trees; also in hedge-rows, and as hedges, as far north as Frankfort-on-the-Oder. When allowed to arrive at maturity, this tree is not less beautiful than the fairest elm, often reaching thirty or forty feet in height. When cultivated to furnish food for the silk-worms, the trees are never allowed to grow higher than three or four feet being cut down to the ground every year in the same manner as a raspberry plantation. In France and Italy the leaves are gathered only once a-year; and when the trees are then wholly stripped, no injury arises from the operation; but if any leaves are left on the trees, they generally receive a severe shock.
The specific characters of the White-fruited Mulberry are—Leaves with a deep scallop at the base, and either cordate or ovate, undivided or lobed, serrated with unequal teeth, glossy or smoothish, the projecting portions on the two sides of the basal sinus unequal. The fruit is seldom good for human food, but is excellent for poultry. It is a tree of rapid growth, attaining the height of twenty feet in five or six years, and plants cut down producing shoots four or five feet long in one season.
THE BRITISH OAK.
[Quercus.[O] Nat. Ord.—Amentiferæ; Linn.—Monœc. Polya.]
[O] Generic characters. Barren flowers arranged in a loose, pendulous catkin, the perianth single, the stamens 5-10. Fertile flower in a cupulate, scaly involucrum, with 3 stigmas. Fruit an acorn, 1-celled, 1-seeded, seated in the cupulate, scaly involucrum.
The Oak, when living, monarch of the wood;
The English Oak, when dead, commands the flood.
Churchill.