Gustav Karl Wilhelm Hermann Karsten
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Gustav Karl Wilhelm Hermann Karsten (1817 - 1908) 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.
The standard botanical author abbreviation H.Karst. is applied to plants he described.