Albert Francis Blakeslee (1874-1954), US botanist. Blakeslee was awarded a doctorate from Harvard in 1904. He then studied in Germany for two years at

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Albert Francis Blakeslee (1874-1954), US botanist. Blakeslee was awarded a doctorate from Harvard in 1904. He then studied in Germany for two years at the University of Halle-Wittenberg. On his return to the USA, he worked at Connecticut Agricultural College before moving to the Carnegie Institution in 1915. He spent most of his career there, becoming director for the Institute's Department of Genetics and retiring in 1941. His major work was on plant genetics, studying chromosomes using the poisonous jimsonweed (Datura) plant as a model organism. He also worked on the sexuality of fungi. Photographed and signed in 1940.

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Photo credit: © AMERICAN PHILOSOPHICAL SOCIETY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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