Sphaeroplea punctalis c. 1843 - 1853

Anna Atkins' cyanotype photograph "Sphaeroplea punctalis," created between 1843 and 1853, showcases her pioneering work in botanical illustration. The image, a detailed rendering of the freshwater algae *Sphaeroplea punctalis*, is a testament to her dedication to scientific accuracy and her innovative use of the cyanotype process. This photo, part of her groundbreaking book "Photographs of British Algae: Cyanotype Impressions," revolutionized scientific documentation, establishing her as a key figure in the history of photography.