Willows and Poplars
"By the rivers of Babylon, there we sat down, yea, we wept, when we remembered Zion. Upon the willows in the midst thereof we hanged our harps." Thus sang the Psalmist of the sorrows of the exiles in Babylon, and his song has fastened the name of the great and wicked city upon one of the most familiar willows, while also making it "weep"; for the common weeping willow is botanically named Salix Babylonica.
It may be that the forlorn Jews did hang their harps upon the tree we know as the weeping willow, that species being credited to Asia as a place of origin; but it is open to doubt, for the very obvious reason that the weeping willow is distinctly unadapted to use as a harp-rack, and one is at a loss to know just how the instruments in question would have been hung thereon. It is probable that the willows along the rivers of Babylon were of other species, and that the connection of the city of the captivity and the tears of the exiles with the long, drooping branches of the noble tree which has thus been sorrowfully named was a purely sentimental one. Indeed, the weeping willow is also called Napoleon's willow, because the great Corsican found much pleasure in a superb willow of the same species which stood on the lonely prison isle of St. Helena, and from twigs of which many trees in the United States have been grown.
The willow family presents great contrasts, both physical and sentimental. It is a symbol both of grief and of grace. The former characterization is undoubtedly because of the allusion of the one hundred and thirty-seventh Psalm, as quoted above, thoughtlessly extended through the centuries; and the latter, as when a beautiful and slender woman is said to be of "willowy" form, obviously because of the real grace of the long, swinging wands of the same tree. I might hint that a better reason for making the willow symbolize grief is because charcoal made from its twigs and branches is an important and almost essential ingredient of gunpowder, through which a sufficiency of grief has undoubtedly entered the world!
Willow twigs seem the very essence of fragility, as they break from the parent tree at a touch; and yet one of the willows furnishes the tough, pliable and enduring withes from which are woven the baskets of the world. The willows, usually thin in branch, sparse of somewhat pale foliage, of so-called mournful mien, are yet bursting with vigor and life; indeed, the spread and the value of the family is by reason of this tenacity and virility, which makes a broken twig, floating on the surface of a turbid stream, take root and grow on a sandy bank where nothing else can maintain itself, wresting existence and drawing strength and beauty from the very element whose ravages of flood and current it bravely withstands.
Apparently ephemeral in wood, growing quickly and perishing as quickly, the willows nevertheless supply us with an important preservative element, extracted from their bitter juices. Salicylic acid, made from willow bark, prevents change and arrests decay, and it is an important medical agent as well.