Carl Georg Oscar Drude
From 1870 he studied science and chemistry at the Collegium Carolinum in Braunschweig, relocating to the University of Göttingen the following year, where he was influenced by August Grisebach (1814-1879). In 1873 he obtained his PhD and subsequently served as an assistant to Friedrich Gottlieb Bartling (1798-1875).
From 1876 to 1879 he worked as a lecturer in botany at Göttingen, followed by an appointment as chair of botany at Dresden Technical University (1879). Here he served as director of its botanical gardens, which he systematically configured according to a phytogeographical principle. He remained at Dresden until his retirement in 1920, twice serving as university rector (1906-1907, 1918-1919).
He is known best for his research in the field of plant geography, that included mapping of the world's different floristic zones. With Adolf Engler 1844-1930), he was co-editor of Die Vegetation der Erde (1896-1928).
Principal works 
- Atlas der Pflanzenverbreitung, 1887
- Handbuch der Pflanzengeographie, 1890
- Deutschlands Pflanzengeographie, 1896-
- Die Ökologie der Pflanzen, 1914.
- Deutsche Biographie Drude, Carl Georg Oscar
- Charles Smith ChronoB Some Biogeographers, Evolutionists and Ecologists: Chrono-Biographical Sketches (with photograph).
- Google Books Geography, Volume 29
- Google Books Nature, Volume 37 edited by Sir Norman Lockyer
- WorldCat Titles (publications)
- "Author Query for 'Drude'". International Plant Names Index.
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