Friedrich Adolph Wislizenus
Friedrich Adolph Wislizenus (first name sometimes spelled Frederick) (21 May 1810, Königsee – 23 September 1889) was a German-born American medical doctor, explorer and botanist. He is best known for his printed recollections from travels to Northern Mexico and today's state of New Mexico, as well as a number of species named after him.
Source: Wikipedia — Friedrich Adolph Wislizenus (CC BY-SA 4.0)