Ключевые слова: abstract, alley, angle, background, bare, black, bole, branch, cloud, cloudy, crown, depressive, floral, forest, garden, gray, grey, high, leaf, leafless, line, mistletoe, naked, natural, nature, outdoor, park, pattern, perspective, plant, sad, sadness, season, silhouettes, sky, sprig, stem, tall, thick, top, tree, treetop, trunk, twig, up, upwards, vegetation, white, without, woods,