Sir Joseph Dalton Hooker (1817-1911), English naturalist. Interested chiefly in the origin and development of plants, he made frequent scientific trips to various parts of the world, becoming an authority on facts and problems of plantdistribution. He influenced English naturalist and author Charles Darwin (1809 - 1882) to publish his theories on species development. —HDA Tapes (Oakland Lectures) Approved Glossary (16.4.92)