High Quality Content by WIKIPEDIA articles! Wolffia columbiana (Columbian watermeal) is a perennial aquatic plant in the Duckweed family (Lemnaceae). This plant is distributed widely throughout North, Central, and South America, and also occurs in Curacao. A perennial plant or perennial (Latin per, "through", annus, "year") is a plant that lives for more than two years. The term is often used to differentiate a plant from shorter lived annuals and biennials. When used by gardeners or horticulturalists, perennial applies specifically to winter hardy herbaceous plants. Scientifically, woody plants like shrubs and trees are also perennial in their habit.

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