Читать книгу Wayside and Woodland Trees: A pocket guide to the British sylva - Step Edward - Страница 8

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We speak of the Oak as the "Monarch of the Woods," and to the Beech the title "Mother of Forests" has been given. To the timber-merchant the Beech has little importance, but the grower of timber freely acknowledges his heavy indebtedness to this nursing mother, for, in the words of Professor Gayer, the Bavarian forestry expert, "without Beech there can no more be properly tended forests of broad-leaved genera, as along with it would have to be given up many other valuable timber-trees, whose production is only possible with the aid of Beech." Quite apart from utilitarian considerations, we should be very sorry to lose the Beech, with its towering, massive shaft clad in smooth grey bark, its spreading roots above the soil, and the dense shade of its fine foliage. Fortunately for the lover of natural beauty, it is this luxuriant growth of leaves and the shade it gives that are the redeeming virtues of the Beech in the eye of the forester. Its drip destroys most of the soil-exhausting weeds, its shade protects the soil from over-evaporation, and the heavy crop of leaves enriches it by their decomposition. On these points the forestry experts of to-day join hands with John Evelyn, who, nearly 250 years ago, thus referred to it—"The shade unpropitious to corn and grass, but sweet, and of all the rest, most refreshing to the weary shepherd—lentus in umbra, echoing Amaryllis with his oaten pipe." And, again, after giving us a long catalogue of the varied uses to which Beechwood may be put, he adds—"Yet for all this, you would not wonder to hear me deplore the so frequent use of this wood, if you did consider that the industry of France furnishes that country for all domestic utensils with excellent Walnut, a material infinitely preferable to the best Beech, which is indeed good only for shade and for the fire." In the days of open hearths and chimney corners the Beech was extensively used for fuel, and it is still reputed to make good charcoal; but to-day the chairmaker and the turner are the chief users of its wood.

Pl. 11. Bole of Beech.

The Beech well grown attains a height of about 100 feet, and a girth of 20 feet. There was, until recently, a Beech in Norbury Park, Surrey, 160 feet in height. Its branches horizontally spreading gave it a head of enormous proportions. Hooker gives the diameter of the Knowle Beech as 352 feet, which means a circumference of about as many yards. It will grow in most upland places where the Oak thrives, though it does not need so deep a soil, and has a preference for land containing lime. Fresh mineral soils, rich in humus, are the best for it. In poor soils its growth is slow and its life is longer. It begins to bear mostly at about eighteen years of age, and thereafter gives good crops at intervals of three or five years.

In spring, just before the buds expand, the twigs of the Beech have a very distinct appearance. They are long and slender, placed alternately along the twig, and the brown envelopes retain their shape long after they have been cast off. It is interesting to note how well these are mimicked by a glossy spindle-shaped snail (Clausilia laminata) that has a decided fondness for the Beech. As the snails crawl up the bole or over the moss at its base, it is not easy at a glance to say which are snails and which bud-envelopes. This is one of the protective resemblances adopted by many animals to give them a chance of eluding their natural enemies—in this case the thrush and other birds.

In the bud the leaf is folded fan-wise, and the folds run parallel with the nerves. They expand into an oval, smooth-faced leaf, with slightly scooped edges, and a most delicate fringe of short gossamer, which falls off later. These leaves Evelyn recommended as a stuffing for beds, declaring that if "gathered about the fall, and somewhat before they are much frost-bitten, [they] afford the best and easiest mattresses in the world to lay under our quilts instead of straw.... In Switzerland I have sometimes lain on them to my great refreshment." That last clause seems to imply that the authorities at home would not allow the introduction of new-fangled bed-stuffings, but remained true to straw. These leaves are rich in potash, and as they readily decay, they produce an admirable humus. In sheltered places the leaves, turned to a light ruddy-brown colour, are retained on the lower branches until cast off by the expansion of the new buds.

In early summer, whilst the leaves are still pellucid, the shade of a big Beech is particularly inviting. Later the leaves become opaque, and their glossy surfaces throw back the heat rays. Then the play of light upon the great mass of foliage is very fine; but when autumn has turned their deep green to orange and warm ruddy brown, and they catch the red rays of the westering sun, the tree appears to be turned into a blazing fire.

Pl. 12. Beech—winter.

Leaves, flowers, and fruit of Beech. A, female; B, male flowers.

The Beech flowers in April or May. The blossoms are rather more conspicuous than is the case with the Oak, for the male flowers are gathered together in a hanging purplish-brown rounded tassel with yellow anthers. The female flowers, to the number of two, three, or four, are clustered in a "cupule" of overlapping scales, like those of the Oak. But in the Beech the "cupule" becomes a bristly closed box, which afterwards opens by one end splitting into four triangular silk-hair-lined valves, which turn back and reveal the three-sided, sharp-edged "mast." This mast was formerly a very valuable product of the Beech-woods, when herds of swine were turned in them to feed upon the fallen Beech-nuts. Agricultural methods have changed; but though our hogs are now confined in styes, and fed on a diet that more rapidly fattens, Beech-mast is still a good food eagerly taken by such woodland denizens as badgers, deer, squirrels, and dormice.

The vitality of the Beech is so high that quite frequently the bole divides at its upper part into several trunks, which rise straight up, and each attains the dimensions of a complete tree. Often such a tree stands on a sandy bank, and seems in imminent danger of toppling over, but its uprightness secures it against strain, and the roots that it sent down the steep side of the bank have thickened into strong props. Many such trees may be found along the hollow lanes in the Greensand district of Surrey, and we have more than once sheltered from a storm under their roots.

We have already mentioned the value of the Beech as a nurse for other trees, and its frequent use for that purpose, but it should also be stated that it is a powerful competitor with other trees, and if these are left to fight their own battles unaided, the Beech will be the conqueror. Evelyn saw this more than two centuries ago, and pointed out that where mixed woods of Oak and Beech were left to themselves, they ultimately became pure Beech woods. The Beech appears to gain this advantage through rooting in the surface soil, and, exhausting it of food elements, suffers none to penetrate to the lower strata, where the Oak has its roots.

A number of insects feed upon the Beech, but they are mostly more beautiful or more singular than destructive. The Copper Beech, which is so effectively used for ornament in parks, is merely a sub-variety of the Common Beech, and all the examples in cultivation are believed to be "sports" from the purple variety, which itself was a natural sport discovered in a German wood little more than a hundred years ago.

The modern word Beech is derived from the Anglo-Saxon boc, bece, beoce, which had very similar equivalents in all branches of the German and Scandinavian family, and from the fact that the literature of these people was inscribed on tablets of Beech, our word book has the same origin.