blue plants

<n>Nitophyllum Bonnemaisoni</n>, a cyanotype print from c. 1843 by English botanist <n>Anna Atkins</n>.

<n>Sargassum plumosum</n>, a cyanotype by botanist <n>Anna Atkins</n> from her 1843 book of British algae.

<n>Laminaria digitata</n>, a cyanotype by photographer <n>Anna Atkins</n> from her 1843 book of British algae.

<n>Polysiphonia fastigiata</n>, a <n>cyanotype</n> by <n>Anna Atkins</n> from her book <n>Photographs of British Algae</n>, ca. 1843–53.

A 1843 cyanotype of Asperococcus pusillus by botanist <n>Anna Atkins</n>. Image from <n>The New York Public Library</n>.

<n>Laminaria bulbosa</n>, a cyanotype created by artist <n>Anna Atkins</n> in 1843.

<n>Schizonema comoides</n>, a cyanotype print by <n>Anna Atkins</n> from 1843.