Onagraceae: "The Evening Primrose Family"

Leaves simple, variously arranged

Flowers usually regular, perfect, 4(2,3,5)-merous, epigynous, with hypanthium (some)

Petals free, may be reduced or absent

Sepals free

Stamens same or 2X number sepals

Fruit a dehiscent capsule or indehiscent nut

provided by J. Wenger, Sept. 1996