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245 pages, Hardcover
First published August 15, 2011
Just by virtue of being in a tree's presence, one develops an overall impression of the tree that is more than the sum of its parts. The word birders use to describe such an impression is jizz. Forget any other meaning you may have learned for this word; for birders, jizz means the overall impression or appearance of a bird garnered from such features as its shape, posture, flying style, size, color, voice, habitat, and location. It is a word that could also be applied to trees, because those who know trees best know them not as collections of identifiable parts but as organic wholes, like friends or family members whose recognizable features and behaviors have blended into one unmistakable, and beloved, presence. A black locust, for example, is not just a collection of parts that include compound leaves, dropping racemes of white flowers, deeply fissured bark, and pea-like seed pods. It is the sweet fragrance of May flowers dripping from broken branches on a ramshackle trunk, not to mention bees visiting the flowers and leaf miners devouring the leaves. To experience the jizz of trees, one needs to know them intimately, and the information that follows should help you accomplish that. (38)
What leaf scars represent - their symbolic significance - intrigues me as much as their physical appearance, however. Everywhere you see a leaf scar and its accompanying bundle scars, you are seeing a healed-over spot where a tree has, in order to keep itself alive, discarded a leaf. Because in winter, with reduced sunlight, a leaf is a liability to a deciduous tree (kept on the tree, it would continue to lose water to the atmosphere while producing little food), trees break their connections to their leaves and instead put their resources into maintaining their other living parts, including their resting buds. Not only does this process seem intelligent, efficient, and elegant to me, but there is something about it that seems to represent a life lesson - the wisdom of marshaling your resources when they are limited and you are under stress, so you can survive to live more productively another day. (89)