Ключевые слова: african, aquatic, bloom, blossom, blue, botanic, botanical, collection, colorata, conservation, conservatory, ecosystem, exotic, floating, floriculture, flower, flowering, freshwater, garden, gardening, glasshouse, greenhouse, habitat, horticulture, hothouse, hydrophytes, large, leaves, lily, macrophytes, natural, nature, nymphaea, petersburg, plant, pond, purple, research, reservoir, saint, swamp, tropical, water, waterlily, wetland,