Ключевые слова: abstract, background, botanical, closeup, common, commonduckweed, cover, covered, dirty, drift, driftweed, duckweed, environment, flora, floral, frame, freshwater, fullframe, garden, green, lake, lemna, lemnaminor, lemneae, lemnoideae, lesserduckweed, macro, marsh, mud, natural, nature, nobody, object, outdoor, overgrown, park, pattern, plant, pond, river, season, summer, surface, textural, texture, unclean, up, water, waterplant, weedy,