Polysiphonia Grevillii [= Polysiphonia Greville] c. 1843 - 1853

"Polysiphonia Grevillii" (c. 1843 - 1853) is a cyanotype photograph by Anna Atkins, a pioneer of photography and a botanist. This image is a detailed representation of a type of red algae, a species of seaweed. Atkins used the cyanotype process, a photographic technique that produces a distinctive blue print, to document her botanical studies. This image, like other works in her book, "Photographs of British Algae: Cyanotype Impressions", combines scientific accuracy with artistic beauty, demonstrating the potential of photography as a tool for scientific documentation and artistic expression.