Which art movement is Georgia O'Keeffe especially associated with in American art?

Georgia O'Keeffe is especially associated with American modernism.

Her work helped establish a distinctly American form of modernist painting through abstraction, close views of flowers, urban imagery, bones, and New Mexico landscapes. She often simplified natural forms and enlarged them so that familiar subjects appeared unfamiliar or monumental.

O'Keeffe was influenced by modernist ideas, including the expressive possibilities of line, shape, and color, but she resisted being reduced to a single style or explanation. Her paintings changed significantly across different periods of her career.

She is sometimes described as a precisionist because of the clean forms and architectural subjects in some works, but American modernism is the broader classification most closely associated with her overall career. Her importance also rests on her independent status in a field that was often dominated by male artists.