Ключевые слова: africa, african, aquarium, aquatic, araceae, arum, background, botanical, botany, cabbage, closeup, cultivate, cultivated, cultivation, exotic, field, flower, flowering, flowers, green, horticulture, invasive, leaf, leaves, lettuce, macro, marsh, natural, nature, nile, pattern, perennial, pistia, pistia stratiotes, plant, plants, pond, river, shell, shellflower, specie, species, spread, spreading, stratiotes, swamp, tropical, water, wild,