Franz Engel
Franz Engel was a German explorer and naturalist.
Engel traveled extensively in South America between 1857 and 1863 and published the results of his explorations in several volumes, including Studien unter den Tropen Amerikas, 'Aus dem Pflanzerstaate Zulia'. From 1872 to 1896, he published the Landwirthschaftliche Jahrbücher.