The Botanist's Companion, Volume II / Or an Introduction to the Knowledge of Practical Botany, and the Uses of Plants. Either Growing Wild in Great Britain, or Cultivated for the Puroses of Agriculture, Medicine, Rural Oeconomy, or the Arts

by William Salisbury

131. POPULUS alba. WHITE POPLAR. This is a very ornamental tree. The leaves on the under surface are of a fine white, and on the reverse of a very dark green; and when growing on large trees are truly beautiful, as every breath of air changes the colour as the leaves move. The wood of all the species of poplar is useful for boards, or any other purposes if kept dry. It is much in demand for floor-boards for rooms, it not readily taking fire; a red-hot poker falling on a board, would burn its way through it, without causing more combustion than the hole through which it passed.

132. POPULUS monilifera. CANADA POPLAR.—This is also known by the name of BLACK ITALIAN POPLAR, but from whence it had this name I do not know. This species, which is the finest of all the kinds, grows very commonly in woods and hedges in many parts of Worcestershire and Herefordshire, where it reaches to prodigious sizes. Perhaps no timber is more useful than this; it is very durable, and easy to be converted to all purposes in building. The floors of a great part of Downton Castle, the seat of R. Payne Knight, Esq. are laid with this wood, which have been used forty years and are perfectly sound. Trees are now growing on his estate which are three and four feet in diameter. I have one growing in my Botanic garden which is eight years old, and measures upwards of six cubic feet of timber. The parent of this tree which grew at Brompton I converted into boards. It was nineteen years growing; and when cut down it was worth upwards of fourteen pounds, rating it at the then price of deal, for which it was a good substitute. Some fine specimens of this tree are also to be seen at Garnins, the seat of Sir J. G. Cotterell, Bart. the present worthy member for the county of Hereford.

133. PRUNUS domestica. THE COMMON PLUM-TREE.—This is the parent of our fruit of this name.

134. PRUNUS Cerasus. WILD CHERRY-TREE.—Is the parent of our fine cherries. It is cultivated much in Scotland for the timber, which is hard, and of use for furniture and other domestic purposes. It is the best and most lasting stock for grafting on. Persons who are about to plant this fruit would do well to inquire into the nature of the stock, as no fruit-tree is so liable to disease and become gummy as cherries are, and that is often much owing to the improved kinds being sown for stocks, which are of a more tender texture and of course less hardy than this.

135. PRUNUS insititia. SLOE-TREE.—Is of little use except when it occurs in fences. The fruit is a fine acid, and is much used by the common people, mixed with other fruits less astringent and acid, to flavour made wines. It is believed that much Port wine is improved by the same means.

136. PYRUS communis. PEAR-TREE.—This is the parent of all our fine varieties of this fruit, and is used as the stock for propagating them; these are raised from seeds for that purpose. The wood of the Peartree is in great esteem for picture frames, it receiving a stain better than almost any other timber known.

137. PYRUS Malus. CRAB-TREE.—A tree of great account, as being the parent of all our varieties of apples, and is the stock on which the fine varieties are usually grafted. A dwarf variety of this tree, called the Paradise Apple, is used for stocks for making dwarf apple trees for gardens.

The juice of the Crab is called verjuice, which is in considerable demand for medicinal and other purposes.

138. QUERCUS robur. THE OAK.—Is a well known tree peculiar to Great Britain, and of the greatest interest to us as a nation. It is of very slow growth; but the timber is very strong and lasting, and hence it is used for building our shipping. The bark is supposed to contain more tannin than that of any other tree, and is valuable on that account. The acorns, or fruit, are good food for hogs, which are observed to grow very fat when turned into the forests at the season when they are ripe. The tree is raised from the acorn, which grows very readily.

We have accounts of Oak trees growing to great ages, and to most enormous sizes. One instance is mentioned by Evelyn, of one growing at Cowthorp, near Weatherby, in 1776, which within three feet of the ground was sixteen yards in circumference, and its height about eighty-five feet. Hunter's Evelyn's Sylva, p. 500.