Ключевые слова: abstract, aquatic, azolla, azollaceae, background, beautiful, botanical, botany, color, environment, farm, fern, ferns, fertilizer, floating, flora, foliage, fresh, garden, green, green manure, growing, growth, leaf, leaves, macro, natural, nature, nature background, organic, outdoor, pattern, pinnata, plant, red, season, small, surface, texture, tropical, velvet, wallpaper, water,