Which art movement is most closely associated with Georgia O'Keeffe's enlarged flower paintings?

Georgia O'Keeffe's enlarged flower paintings are most closely associated with American modernism.

Her close-up views of flowers transformed familiar natural subjects into bold compositions of simplified shapes, intense color, and strong contours. Paintings such as Black Iris III and Jimson Weed are often discussed as important examples of her modernist approach.

O'Keeffe rejected the idea that her flowers had to be read only as symbolic or sexual images. She explained that enlarging a flower made people notice it, because most viewers moved too quickly to see its details in nature.

American modernism was not a single uniform style. It included abstraction, precisionism, and other approaches that responded to modern life and European developments. O'Keeffe became one of its best-known American representatives, while maintaining a highly individual visual language.