Gustav Karl Wilhelm Hermann Karsten (6 November 1817, Stralsund – 10 July 1908, Zoppot) was a German botanist and geologist. Born in Stralsund, he followed the example of Alexander von Humboldt and traveled 1844-56 to the north of South America. He died 1908 in Berlin-Grunewald.
Selected bibliography 
- Florae Columbiae ... 1859-1869.
- Chemismus der Pflanzenzelle 1869.
- Deutsche Flora. Pharmaceutisch-medicinische Botanik 1880-1883; second edition 1894–1895.
External links