H Walter LackH. Walter Lack is a professor at the Free University of Berlin and former director of the Botanical Gardens and Botanical Museum in Berlin-Dahlem. A leading expert in the history of botany, his research focuses on the global transfer of useful and oramental plants from a cultural historical perspective. He is the author of TASCHEN's Garden of Eden, The Book of Palms and Redouté. The Book of Flowers. Read More Read Less