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family contains about 10 native and 4 introduced species.
They are all herbs, and range from dry forests and pastures
to alpine areas. They have small to medium sized,
conspicuous flowers with sepals, petals and stamens equal in
number (usually 4 or 5). The leaves usually have three or
five main veins.
The aquatics genera, Villarsia, Nymphoides and Liparophyllum,
are now placed in a separate family, Menyanthaceae.
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