Aimé Bonpland
Bonpland, Aimé

* August 29, 1773 – May 04, 1858 †

France

Identified Poaceae and collected Asteraceae

Alexander von Humboldt
von Humboldt, Alexander

* September 14, 1769 – May 06, 1859 †

Kingdom of Prussia

Identified Ehretiaceae and collected Asteraceae

Sieber, Franz

* March 30, 1789 – December 17, 1844 †

Austrian Empire

Identified Apiaceae and collected Fabaceae