Imogen Cunningham. This photo is successful because of the sepia tint. It really brings out the details in the hands and the bracelets. The dark background also brings out the hands. The hands tell a story and represent progress to me.
Imogen Cunningham's photography also focuses on the formal elements within nature, but unlike Karl Blossfeldt's work, hers consists of many more graceful and elegant lines as opposed to strict, direct forces.