Ключевые слова: alder, alnus, alnus glutinosa, background, black, black alder, botanical, botany, branch, bright, capillarity, carbohydrates, catkins, close up, common alder, cone, cones, european, european alder, fall, female, flora, food, fruit, goldfinch, green, growth, hard wood, leaf, leaves, light, male reproductive part, nature, nutrients, outdoor, photosynthesis, plant, plant life, principal producer, seasonal, seed, seeds, small, spring flowering, stomata, structure, sunlight, tree, water loss, wet habitats,