Callithamnion purpurascens c. 1843 - 1853

"Callithamnion purpurascens" is a cyanotype photograph by Anna Atkins, created between 1843 and 1853. Atkins was a pioneer of photography, and her work is notable for its scientific accuracy and artistic beauty. This particular image depicts a species of red algae, showcasing the delicate details of its structure. The cyanotype process, using a light-sensitive iron solution, produces a distinctive blue and white image. Atkins' cyanotype albums are considered important examples of early photographic documentation and scientific illustration, contributing to both the fields of botany and photography.