Ключевые слова: abstract, agriculture, aquatic, azolla, backdrop, background, biology, botany, color, common, duck weed, duckweed, environment, farming, fern, floating, flood, flora, foliage, fresh, garden, green, growth, leaf, leaves, lemna, mosquito fern, moss, natural, nature, outdoor, paddy, pattern, plant, river, salviniaceae, surface, texture, top view, wallpaper, water, water fern, water ferns, weed, wild,