[1][2][3][4] It is endemic to the United States, in Texas (excluding the Trans-Pecos) and southern Oklahoma.

[5] Oenothera suffulta is an annual herb, of open, sandy places.

The stem leaves (cauline leaves) are alternate, simple, and range from 1–9 cm (0.4–3.5 in) long, with smooth, wavy, or toothed edges.

The lower leaf surface is softly, velvety hairy.

The fruit is a woody, indehiscent capsule with broad wings on the angles.