In Paul Friedrich's book Proto-Indo-European Trees he identifies the "semantic primitives" of the Indo-European tribe of languages through a group of words that have not changed much through twelve thousand years - and those are tree names: especially birch, willow, adler, elm, ash, apple and beech (bher, wyt, alysos, ulmo, os, abul, bhago). Seed syllables, bija, of the life of the west.
Gary SnyderClambering up the Cold Mountain path, The Cold Mountain trail goes on and on: The long gorge choked with scree and boulders, The wide creek, the mist-blurred grass. The moss is slippery, though there's been no rain The pine sings, but there's no wind. Who can leap the world's ties And sit with me among the white clouds?
Gary Snyder