The scientific name of water lily Nymphaeatetragona is also known as meridian lily, cress flower, reliance, water ocean flower or small lotus, called waterlily in English, which belongs to sleep

water lily

Nymphaea tetragona, also known as meridian lily, cress flower, relius, aquatic flower or small lotus, known as water lily in English, is a perennial aquatic herb belonging to the family Nymphaeaceae of the family Nymphaeaceae.

The appearance of the water lily is similar to that of the lotus, except that the leaves and flowers of the lotus stand out of the water, while the leaves and flowers of the water lily float on the surface of the water, which is different from the lotus's "out of the mud and not clean".

Water lilies bloom white flowers in autumn, open in the afternoon, close at night, and can be opened and closed continuously for three or four days; Water lilies are known as the "sleeping beauty of flowers" because of the day roll (some varieties bloom during the day and close at night).

Water lilies are widely used for edibles, tea making, flower arrangement, medicinal purposes, etc. However, the seeds of water lilies are generally not eaten due to their high tannin content. The "Compendium of Materia Medica" records that "Meridian lotus, the water and grass department of the program, into 𬞟, thinking that this is the great leaf 𬞟, the ancients thought that food, sacrifice 𬞟, su", "red and white lotus, I don't know if it is a lotus flower, but the work is the same as the lotus, and the analogy is followed". Water lily cut flowers are out of water for more than 1 hour may lose water absorption and loss of opening ability.

Water lilies are also one of the common botanical materials used to make essential oils and perfumes.