What was Georgia O'Keeffe’s 1939 painting of a white flower and green leaves called?

Georgia O'Keeffe’s 1939 painting of a white flower and green leaves was called Jimson Weed/White Flower No. 1.

The oil painting shows a large white jimson weed flower against a pale background, with green leaves below it. O'Keeffe enlarged flowers so that viewers had to confront their shapes, folds, and tonal changes rather than seeing them merely as small decorative objects.

The work was painted in 1939, during a period when O'Keeffe was producing flower paintings as well as Southwestern landscapes and objects. Jimson weed is also known as datura, a plant with trumpet-shaped flowers that can be poisonous. The title identifies both the plant and its place in O'Keeffe’s numbered white-flower series.

The painting became especially famous after selling at auction in 2014. It is often confused with O'Keeffe’s iris paintings, but the flower in this work is jimson weed, not an iris. The slash in the title is part of the commonly used title.