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,