Leaves alternate, opposite, or whorled
Flowers bisexual, actinomorphic, in a variety of infls., gynoecium of 4 carpels with 1 locule, style sometimes parted or lobed, reflecting the number of carpels
Fruit a capsule, nut or berry
Seeds with little or no endosperm
17 genera, 675 species
Onagraceae is a well-defined family of little economic importance
Diagnostic characteristics: 4-merous flowers, inferior ovary, lobed or parted style branch, often showy flowers, hypanthium with CA, CO, and A inserted on its rim
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