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Chamisso (1781-1838), who will not only be remembered as a poet, but also as a botanist left a classic book to the German literature.
Project Gutenberg link of e-book
http://www.gutenberg.org/files/21943/21943-h/21943-h.htm
http://www.gutenberg.org/files/21943/21943-h/21943-h.htm