A year among the trees

In the latter part of April, some of the most conspicuous groups in many of the wooded districts of Northern New England are Poplar woods, full of olivegreen aments, and giving the hue of their blossoms and of their pale green spray to large portions of the forest in scattered assemblages. At this period the poplars are an important ingredient in our wood-scenery, especially as their colors vary considerably from those of other trees until all kinds are in full foliage. They have the merit also of preceding a greater part of the forest in the development of their flowers. The aments of a few species are variegated with red and purple stamens; but the generality do not vary from a pure olive. The Poplar has not many of the qualities of a beautiful or picturesque tree. It is marked by a coarse and straggling spray, without any variety in its combination. It is deficient in beauty and density of foliage, which is chiefly remarkable for its fragrance and tremulous habit.

All the poplars are rapid in their growth, and will prosper in almost all situations. They prefer a moist, sandy soil, but shun the peat meadow. Their rapidity of growth renders them valuable where a speedy plantation is wanted. Hence they are very generally planted by the sides of dusty thoroughfares, not being dainty in their choice of soil and situation. The species generally employed for such purposes is the Abele, or Silver Poplar, which possesses these requisite properties in a higher degree than our native trees. It displays also more beauty of foliage, and takes a rounder and handsomer shape than most others. One of the defects which I have frequently observed in the shape of the large poplars is a leaning of the branches rather awkwardly toward the south-east, caused by the prevalent north-west winds acting upon branches of great proportional length, and possessing very little elasticity. This inclination is observed more or less in other soft-wooded deciduous trees.

THE CANADA POPLAR.

The Canada or Balm of Gilead Poplar is more frequent by our waysides than any other species. It is a tree of the first magnitude, attaining a great size in the bole as well as a superior height. It is distinguished by its large leaves, of a bright glossy verdure, and its long branches, always subordinate to the central shaft, which may be traced nearly to the summit of the tree. Before the leaves begin to expand, the buds are covered with a yellow glutinous balsam, that diffuses a peculiar and very penetrating but agreeable odor, unlike any other. Sir John Franklin remarks that this tree constitutes “the greatest part of the drift timber observed on the shores of the Arctic Sea.” It has a very wide geographical range, extending from Canada to the Missouri River, and is in many places called the Ontario Poplar. It is abundant in the northern woods, but is found in the southern parts of New England only by the roadsides and in the enclosures of dwelling-houses. The balsam is gathered in all parts of the country as a healing anodyne, and for many ailments it is a favorite remedy in domestic medicine; but no place has yet been assigned to it in the pharmacopœias. All the poplars produce more or less of this substance. It is very different from turpentine, more agreeable when perceived in the air, but pungent and disagreeable to the taste.

There are several of the poplars that are not easily distinguished, and the different and various accounts of them by botanists have increased this confusion. Part of the difficulty arises from the diœcious character of the poplar, causing in some instances the male and female trees to be mistaken for different species. This is particularly remarkable in the Balm of Gilead poplar. The female tree is smaller than the male, with larger leaves, and annoys us by the abundance of cottony down that covers the ground for a considerable space around it. The male tree is taller and more spreading, and would hardly be recognized as the same species.

The Black Poplar is often planted by roadsides with the Canada poplar, and may be distinguished from it by the greater elegance of its proportions, its smaller foliage, and, when in flower, by its reddish and purple catkins. It is preferred to other species on account of an inferior tendency to that suckering habit which is so disagreeable in the poplar tribe. It seems to me that no persons who should see the Canada poplar and the Black Poplar growing side by side, would hesitate in giving preference to the latter, which is in almost every point a more beautiful tree.

This species is called in Europe the Athenian Poplar. According to Selby, “the classic appellation of Athenian Poplar led to the supposition in England that this species is indigenous to Greece, and that it derived its name from the city of Minerva. Several learned botanists were misled by this name; but it was finally ascertained that North America is its native country, and from its abundance in a particular township called Athens it received the imposing title of Athenian Poplar.”

The River Poplar is not rare in the New England forest, but it is little known as an ornamental tree. Emerson says: “It is much the tallest and most graceful of those which grow naturally in New England. Its foliage is equal to that of the Balm of Gilead in size, and superior to it in depth of color; and the abundance of its aments in the spring, and the rich colors of its leaf-stalks and young branches, when growing in somewhat dry situations, make it a beautiful object.” The aments of this tree are not olive-colored, like those of the two aspens, but inclining to red, though not so bright as those of the black and Lombardy poplars. It is very justly called the River Poplar, being found chiefly in wet places, near brooksides, on the banks of rivers, and in alluvial valleys which are liable to be inundated in spring. This tree displays the characteristic peculiarities of the family in giving out its lateral branches at a sharp angle and subordinate to the trunk.