- Description:
Stems are spreading or ascending. Leaves are elliptic and can be up to 5 inches long.
White, tightly-pressed hairs on the surface give them a silvery appearance. Flowers are
composed of four, large, yellow petals with a conspicuous, four-lobed, X-shaped stigma.
- Comments:
The name macrocarpa, meaning, “large fruit,” refers to the showy,
3-inch long seed pods. The pods turn golden and shiny, with four wide wings that give pods
a squared appearance when viewed on end. The flowers open in the evening and wither by
noon of the following day. The flowers are pollinated at night by sphinx moths. Missouri
Evening-primrose is found on shallow, rocky soil on prairies and bare roadside cuts in the
eastern three-quarters of the state.
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