Onagaceae

Onagraceae is a family of flowering plants commonly known as the evening primrose family. It comprises about 650 species in 20 genera. The family is distributed worldwide, but is most diverse in North and South America. Many species are found in temperate and subtropical regions. Onagraceae plants are typically herbaceous or shrubby, though some can be trees.

Key characteristics of Onagraceae include four-petaled flowers that are often showy and yellow or pink, though white and red are also common. The petals are usually borne in fours, as are the sepals. Stamens are typically eight. The ovary is inferior, meaning it is located below the other floral parts. Many species have edible fruits, such as the berries of *Fuchsia* or the seedpods of *Oenothera*. Pollination is often carried out by insects, particularly bees and moths, and some species are adapted for pollination by birds.

Notable genera within Onagraceae include *Oenothera* (evening primroses), *Epilobium* (willowherbs), *Fuchsia*, and *Clarkia* (godetias). *Oenothera* species are known for their night-blooming flowers, hence the common name. *Epilobium* species are widespread and often found in moist or disturbed habitats. *Fuchsia* is a popular ornamental genus with distinctive drooping flowers. *Clarkia* is another genus valued for its attractive, often colorful flowers, and is frequently used in wildflower mixes. The family is of horticultural and ecological importance.